Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2008.0291 -- [RedHat] Critical: krb5 security and bugfix update 19 March 2008 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: krb5 Publisher: Red Hat Operating System: Red Hat Linux Impact: Execute Arbitrary Code/Commands Denial of Service Access: Remote/Unauthenticated CVE Names: CVE-2008-0948 CVE-2008-0947 CVE-2008-0063 CVE-2008-0062 CVE-2007-5971 CVE-2007-5901 Ref: AL-2008.0032 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2008-0164.html https://rhn.redhat.com/errata/RHSA-2008-0180.html https://rhn.redhat.com/errata/RHSA-2008-0181.html https://rhn.redhat.com/errata/RHSA-2008-0182.html Comment: This bulletin contains four (4) Red Hat security advisories - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Critical: krb5 security and bugfix update Advisory ID: RHSA-2008:0164-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0164.html Issue date: 2008-03-18 CVE Names: CVE-2007-5901 CVE-2007-5971 CVE-2008-0062 CVE-2008-0063 CVE-2008-0947 ===================================================================== 1. Summary: Updated krb5 packages that resolve several issues and fix multiple bugs are now available for Red Hat Enterprise Linux 5. This update has been rated as having critical security impact by the Red Hat Security Response Team. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 RHEL Desktop Workstation (v. 5 client) - i386, x86_64 Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 3. Description: Kerberos is a network authentication system which allows clients and servers to authenticate to each other through use of symmetric encryption and a trusted third party, the KDC. A flaw was found in the way the MIT Kerberos Authentication Service and Key Distribution Center server (krb5kdc) handled Kerberos v4 protocol packets. An unauthenticated remote attacker could use this flaw to crash the krb5kdc daemon, disclose portions of its memory, or possibly execute arbitrary code using malformed or truncated Kerberos v4 protocol requests. (CVE-2008-0062, CVE-2008-0063) This issue only affected krb5kdc with Kerberos v4 protocol compatibility enabled, which is the default setting on Red Hat Enterprise Linux 4. Kerberos v4 protocol support can be disabled by adding "v4_mode=none" (without the quotes) to the "[kdcdefaults]" section of /var/kerberos/krb5kdc/kdc.conf. Jeff Altman of Secure Endpoints discovered a flaw in the RPC library as used by MIT Kerberos kadmind server. An unauthenticated remote attacker could use this flaw to crash kadmind or possibly execute arbitrary code. This issue only affected systems with certain resource limits configured and did not affect systems using default resource limits used by Red Hat Enterprise Linux 5. (CVE-2008-0947) Red Hat would like to thank MIT for reporting these issues. Multiple memory management flaws were discovered in the GSSAPI library used by MIT Kerberos. These flaws could possibly result in use of already freed memory or an attempt to free already freed memory blocks (double-free flaw), possibly causing a crash or arbitrary code execution. (CVE-2007-5901, CVE-2007-5971) In addition to the security issues resolved above, the following bugs were also fixed: * delegated krb5 credentials were not properly stored when SPNEGO was the underlying mechanism during GSSAPI authentication. Consequently, applications attempting to copy delegated Kerberos 5 credentials into a credential cache received an "Invalid credential was supplied" message rather than a copy of the delegated credentials. With this update, SPNEGO credentials can be properly searched, allowing applications to copy delegated credentials as expected. * applications can initiate context acceptance (via gss_accept_sec_context) without passing a ret_flags value that would indicate that credentials were delegated. A delegated credential handle should have been returned in such instances. This updated package adds a temp_ret_flag that stores the credential status in the event no other ret_flags value is passed by an application calling gss_accept_sec_context. * kpasswd did not fallback to TCP on receipt of certain errors, or when a packet was too big for UDP. This update corrects this. * when the libkrb5 password-routine generated a set-password or change-password request, incorrect sequence numbers were generated for all requests subsequent to the first request. This caused password change requests to fail if the primary server was unavailable. This updated package corrects this by saving the sequence number value after the AP-REQ data is built and restoring this value before the request is generated. * when a user's password expired, kinit would not prompt that user to change the password, instead simply informing the user their password had expired. This update corrects this behavior: kinit now prompts for a new password to be set when a password has expired. All krb5 users are advised to upgrade to these updated packages, which contain backported fixes to address these vulnerabilities and fix these bugs. 4. Solution: Before applying this update, make sure that all previously-released errata relevant to your system have been applied. This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at http://kbase.redhat.com/faq/FAQ_58_10188 5. Bugs fixed (http://bugzilla.redhat.com/): 415321 - CVE-2007-5901 krb5: use-after-free in gssapi lib 415351 - CVE-2007-5971 krb5: double free in gssapi lib 432620 - CVE-2008-0062 krb5: uninitialized pointer use in krb5kdc 432621 - CVE-2008-0063 krb5: possible leak of sensitive data from krb5kdc using krb4 request 433596 - CVE-2008-0947 krb5: file descriptor array overflow in RPC library 436460 - gss_krb5_copy_ccache can't find delegated Kerberos creds when using SPNEGO 436465 - gss_init_sec_context() mechglue wrapper doesn't handle ret_flags right 436467 - kpasswd does not fallback to tcp 436468 - krb5 password changing uses incorrect sequence numbers for every server but the first 436470 - kinit does not automatically start a password change when password is expired 6. Package List: Red Hat Enterprise Linux Desktop (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/krb5-1.6.1-17.el5_1.1.src.rpm i386: krb5-debuginfo-1.6.1-17.el5_1.1.i386.rpm krb5-libs-1.6.1-17.el5_1.1.i386.rpm krb5-workstation-1.6.1-17.el5_1.1.i386.rpm x86_64: krb5-debuginfo-1.6.1-17.el5_1.1.i386.rpm krb5-debuginfo-1.6.1-17.el5_1.1.x86_64.rpm krb5-libs-1.6.1-17.el5_1.1.i386.rpm krb5-libs-1.6.1-17.el5_1.1.x86_64.rpm krb5-workstation-1.6.1-17.el5_1.1.x86_64.rpm RHEL Desktop Workstation (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/krb5-1.6.1-17.el5_1.1.src.rpm i386: krb5-debuginfo-1.6.1-17.el5_1.1.i386.rpm krb5-devel-1.6.1-17.el5_1.1.i386.rpm krb5-server-1.6.1-17.el5_1.1.i386.rpm x86_64: krb5-debuginfo-1.6.1-17.el5_1.1.i386.rpm krb5-debuginfo-1.6.1-17.el5_1.1.x86_64.rpm krb5-devel-1.6.1-17.el5_1.1.i386.rpm krb5-devel-1.6.1-17.el5_1.1.x86_64.rpm krb5-server-1.6.1-17.el5_1.1.x86_64.rpm Red Hat Enterprise Linux (v. 5 server): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/krb5-1.6.1-17.el5_1.1.src.rpm i386: krb5-debuginfo-1.6.1-17.el5_1.1.i386.rpm krb5-devel-1.6.1-17.el5_1.1.i386.rpm krb5-libs-1.6.1-17.el5_1.1.i386.rpm krb5-server-1.6.1-17.el5_1.1.i386.rpm krb5-workstation-1.6.1-17.el5_1.1.i386.rpm ia64: krb5-debuginfo-1.6.1-17.el5_1.1.i386.rpm krb5-debuginfo-1.6.1-17.el5_1.1.ia64.rpm krb5-devel-1.6.1-17.el5_1.1.ia64.rpm krb5-libs-1.6.1-17.el5_1.1.i386.rpm krb5-libs-1.6.1-17.el5_1.1.ia64.rpm krb5-server-1.6.1-17.el5_1.1.ia64.rpm krb5-workstation-1.6.1-17.el5_1.1.ia64.rpm ppc: krb5-debuginfo-1.6.1-17.el5_1.1.ppc.rpm krb5-debuginfo-1.6.1-17.el5_1.1.ppc64.rpm krb5-devel-1.6.1-17.el5_1.1.ppc.rpm krb5-devel-1.6.1-17.el5_1.1.ppc64.rpm krb5-libs-1.6.1-17.el5_1.1.ppc.rpm krb5-libs-1.6.1-17.el5_1.1.ppc64.rpm krb5-server-1.6.1-17.el5_1.1.ppc.rpm krb5-workstation-1.6.1-17.el5_1.1.ppc.rpm s390x: krb5-debuginfo-1.6.1-17.el5_1.1.s390.rpm krb5-debuginfo-1.6.1-17.el5_1.1.s390x.rpm krb5-devel-1.6.1-17.el5_1.1.s390.rpm krb5-devel-1.6.1-17.el5_1.1.s390x.rpm krb5-libs-1.6.1-17.el5_1.1.s390.rpm krb5-libs-1.6.1-17.el5_1.1.s390x.rpm krb5-server-1.6.1-17.el5_1.1.s390x.rpm krb5-workstation-1.6.1-17.el5_1.1.s390x.rpm x86_64: krb5-debuginfo-1.6.1-17.el5_1.1.i386.rpm krb5-debuginfo-1.6.1-17.el5_1.1.x86_64.rpm krb5-devel-1.6.1-17.el5_1.1.i386.rpm krb5-devel-1.6.1-17.el5_1.1.x86_64.rpm krb5-libs-1.6.1-17.el5_1.1.i386.rpm krb5-libs-1.6.1-17.el5_1.1.x86_64.rpm krb5-server-1.6.1-17.el5_1.1.x86_64.rpm krb5-workstation-1.6.1-17.el5_1.1.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://www.redhat.com/security/team/key/#package 7. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5901 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5971 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0062 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0063 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0947 http://www.redhat.com/security/updates/classification/#critical 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2008 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFH4BsWXlSAg2UNWIIRAgIjAKC3Y/Uio/XeDWRBEALkK8wMvbOqMQCfbiIT jxP6baLdyLdts1AGuvCZc/Q= =Xdyg - -----END PGP SIGNATURE----- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Critical: krb5 security update Advisory ID: RHSA-2008:0180-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0180.html Issue date: 2008-03-18 CVE Names: CVE-2007-5971 CVE-2008-0062 CVE-2008-0063 ===================================================================== 1. Summary: Updated krb5 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 4. This update has been rated as having critical security impact by the Red Hat Security Response Team. 2. Relevant releases/architectures: Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64 Red Hat Enterprise Linux Desktop version 4 - i386, x86_64 Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64 Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64 3. Description: Kerberos is a network authentication system which allows clients and servers to authenticate to each other through use of symmetric encryption and a trusted third party, the KDC. A flaw was found in the way the MIT Kerberos Authentication Service and Key Distribution Center server (krb5kdc) handled Kerberos v4 protocol packets. An unauthenticated remote attacker could use this flaw to crash the krb5kdc daemon, disclose portions of its memory, or possibly execute arbitrary code using malformed or truncated Kerberos v4 protocol requests. (CVE-2008-0062, CVE-2008-0063) This issue only affected krb5kdc with Kerberos v4 protocol compatibility enabled, which is the default setting on Red Hat Enterprise Linux 4. Kerberos v4 protocol support can be disabled by adding "v4_mode=none" (without the quotes) to the "[kdcdefaults]" section of /var/kerberos/krb5kdc/kdc.conf. Red Hat would like to thank MIT for reporting these issues. A double-free flaw was discovered in the GSSAPI library used by MIT Kerberos. This flaw could possibly cause a crash of the application using the GSSAPI library. (CVE-2007-5971) All krb5 users are advised to update to these erratum packages which contain backported fixes to correct these issues. 4. Solution: Before applying this update, make sure that all previously-released errata relevant to your system have been applied. This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at http://kbase.redhat.com/faq/FAQ_58_10188 5. Bugs fixed (http://bugzilla.redhat.com/): 415351 - CVE-2007-5971 krb5: double free in gssapi lib 432620 - CVE-2008-0062 krb5: uninitialized pointer use in krb5kdc 432621 - CVE-2008-0063 krb5: possible leak of sensitive data from krb5kdc using krb4 request 6. Package List: Red Hat Enterprise Linux AS version 4: Source: ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/krb5-1.3.4-54.el4_6.1.src.rpm i386: krb5-debuginfo-1.3.4-54.el4_6.1.i386.rpm krb5-devel-1.3.4-54.el4_6.1.i386.rpm krb5-libs-1.3.4-54.el4_6.1.i386.rpm krb5-server-1.3.4-54.el4_6.1.i386.rpm krb5-workstation-1.3.4-54.el4_6.1.i386.rpm ia64: krb5-debuginfo-1.3.4-54.el4_6.1.i386.rpm krb5-debuginfo-1.3.4-54.el4_6.1.ia64.rpm krb5-devel-1.3.4-54.el4_6.1.ia64.rpm krb5-libs-1.3.4-54.el4_6.1.i386.rpm krb5-libs-1.3.4-54.el4_6.1.ia64.rpm krb5-server-1.3.4-54.el4_6.1.ia64.rpm krb5-workstation-1.3.4-54.el4_6.1.ia64.rpm ppc: krb5-debuginfo-1.3.4-54.el4_6.1.ppc.rpm krb5-debuginfo-1.3.4-54.el4_6.1.ppc64.rpm krb5-devel-1.3.4-54.el4_6.1.ppc.rpm krb5-libs-1.3.4-54.el4_6.1.ppc.rpm krb5-libs-1.3.4-54.el4_6.1.ppc64.rpm krb5-server-1.3.4-54.el4_6.1.ppc.rpm krb5-workstation-1.3.4-54.el4_6.1.ppc.rpm s390: krb5-debuginfo-1.3.4-54.el4_6.1.s390.rpm krb5-devel-1.3.4-54.el4_6.1.s390.rpm krb5-libs-1.3.4-54.el4_6.1.s390.rpm krb5-server-1.3.4-54.el4_6.1.s390.rpm krb5-workstation-1.3.4-54.el4_6.1.s390.rpm s390x: krb5-debuginfo-1.3.4-54.el4_6.1.s390.rpm krb5-debuginfo-1.3.4-54.el4_6.1.s390x.rpm krb5-devel-1.3.4-54.el4_6.1.s390x.rpm krb5-libs-1.3.4-54.el4_6.1.s390.rpm krb5-libs-1.3.4-54.el4_6.1.s390x.rpm krb5-server-1.3.4-54.el4_6.1.s390x.rpm krb5-workstation-1.3.4-54.el4_6.1.s390x.rpm x86_64: krb5-debuginfo-1.3.4-54.el4_6.1.i386.rpm krb5-debuginfo-1.3.4-54.el4_6.1.x86_64.rpm krb5-devel-1.3.4-54.el4_6.1.x86_64.rpm krb5-libs-1.3.4-54.el4_6.1.i386.rpm krb5-libs-1.3.4-54.el4_6.1.x86_64.rpm krb5-server-1.3.4-54.el4_6.1.x86_64.rpm krb5-workstation-1.3.4-54.el4_6.1.x86_64.rpm Red Hat Enterprise Linux Desktop version 4: Source: ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/krb5-1.3.4-54.el4_6.1.src.rpm i386: krb5-debuginfo-1.3.4-54.el4_6.1.i386.rpm krb5-devel-1.3.4-54.el4_6.1.i386.rpm krb5-libs-1.3.4-54.el4_6.1.i386.rpm krb5-server-1.3.4-54.el4_6.1.i386.rpm krb5-workstation-1.3.4-54.el4_6.1.i386.rpm x86_64: krb5-debuginfo-1.3.4-54.el4_6.1.i386.rpm krb5-debuginfo-1.3.4-54.el4_6.1.x86_64.rpm krb5-devel-1.3.4-54.el4_6.1.x86_64.rpm krb5-libs-1.3.4-54.el4_6.1.i386.rpm krb5-libs-1.3.4-54.el4_6.1.x86_64.rpm krb5-server-1.3.4-54.el4_6.1.x86_64.rpm krb5-workstation-1.3.4-54.el4_6.1.x86_64.rpm Red Hat Enterprise Linux ES version 4: Source: ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/krb5-1.3.4-54.el4_6.1.src.rpm i386: krb5-debuginfo-1.3.4-54.el4_6.1.i386.rpm krb5-devel-1.3.4-54.el4_6.1.i386.rpm krb5-libs-1.3.4-54.el4_6.1.i386.rpm krb5-server-1.3.4-54.el4_6.1.i386.rpm krb5-workstation-1.3.4-54.el4_6.1.i386.rpm ia64: krb5-debuginfo-1.3.4-54.el4_6.1.i386.rpm krb5-debuginfo-1.3.4-54.el4_6.1.ia64.rpm krb5-devel-1.3.4-54.el4_6.1.ia64.rpm krb5-libs-1.3.4-54.el4_6.1.i386.rpm krb5-libs-1.3.4-54.el4_6.1.ia64.rpm krb5-server-1.3.4-54.el4_6.1.ia64.rpm krb5-workstation-1.3.4-54.el4_6.1.ia64.rpm x86_64: krb5-debuginfo-1.3.4-54.el4_6.1.i386.rpm krb5-debuginfo-1.3.4-54.el4_6.1.x86_64.rpm krb5-devel-1.3.4-54.el4_6.1.x86_64.rpm krb5-libs-1.3.4-54.el4_6.1.i386.rpm krb5-libs-1.3.4-54.el4_6.1.x86_64.rpm krb5-server-1.3.4-54.el4_6.1.x86_64.rpm krb5-workstation-1.3.4-54.el4_6.1.x86_64.rpm Red Hat Enterprise Linux WS version 4: Source: ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/krb5-1.3.4-54.el4_6.1.src.rpm i386: krb5-debuginfo-1.3.4-54.el4_6.1.i386.rpm krb5-devel-1.3.4-54.el4_6.1.i386.rpm krb5-libs-1.3.4-54.el4_6.1.i386.rpm krb5-server-1.3.4-54.el4_6.1.i386.rpm krb5-workstation-1.3.4-54.el4_6.1.i386.rpm ia64: krb5-debuginfo-1.3.4-54.el4_6.1.i386.rpm krb5-debuginfo-1.3.4-54.el4_6.1.ia64.rpm krb5-devel-1.3.4-54.el4_6.1.ia64.rpm krb5-libs-1.3.4-54.el4_6.1.i386.rpm krb5-libs-1.3.4-54.el4_6.1.ia64.rpm krb5-server-1.3.4-54.el4_6.1.ia64.rpm krb5-workstation-1.3.4-54.el4_6.1.ia64.rpm x86_64: krb5-debuginfo-1.3.4-54.el4_6.1.i386.rpm krb5-debuginfo-1.3.4-54.el4_6.1.x86_64.rpm krb5-devel-1.3.4-54.el4_6.1.x86_64.rpm krb5-libs-1.3.4-54.el4_6.1.i386.rpm krb5-libs-1.3.4-54.el4_6.1.x86_64.rpm krb5-server-1.3.4-54.el4_6.1.x86_64.rpm krb5-workstation-1.3.4-54.el4_6.1.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://www.redhat.com/security/team/key/#package 7. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5971 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0062 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0063 http://www.redhat.com/security/updates/classification/#critical 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2008 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFH4BseXlSAg2UNWIIRAoVaAJoDUUNDU1IkiukcpsxLFuBgulbB7QCdGym5 EGvfGMrlx+c408b2A/xHVQg= =uNP0 - -----END PGP SIGNATURE----- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Critical: krb5 security update Advisory ID: RHSA-2008:0181-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0181.html Issue date: 2008-03-18 CVE Names: CVE-2008-0062 CVE-2008-0063 CVE-2008-0948 ===================================================================== 1. Summary: Updated krb5 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 2.1 and 3. This update has been rated as having critical security impact by the Red Hat Security Response Team. 2. Relevant releases/architectures: Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - i386, ia64 Red Hat Linux Advanced Workstation 2.1 - ia64 Red Hat Enterprise Linux ES version 2.1 - i386 Red Hat Enterprise Linux WS version 2.1 - i386 Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64 Red Hat Desktop version 3 - i386, x86_64 Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64 Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64 3. Description: Kerberos is a network authentication system which allows clients and servers to authenticate to each other through use of symmetric encryption and a trusted third party, the KDC. A flaw was found in the way the MIT Kerberos Authentication Service and Key Distribution Center server (krb5kdc) handled Kerberos v4 protocol packets. An unauthenticated remote attacker could use this flaw to crash the krb5kdc daemon, disclose portions of its memory, or possibly execute arbitrary code using malformed or truncated Kerberos v4 protocol requests. (CVE-2008-0062, CVE-2008-0063) This issue only affected krb5kdc with Kerberos v4 protocol compatibility enabled, which is the default setting on Red Hat Enterprise Linux 4. Kerberos v4 protocol support can be disabled by adding "v4_mode=none" (without the quotes) to the "[kdcdefaults]" section of /var/kerberos/krb5kdc/kdc.conf. A flaw was found in the RPC library used by the MIT Kerberos kadmind server. An unauthenticated remote attacker could use this flaw to crash kadmind. This issue only affected systems with certain resource limits configured and did not affect systems using default resource limits used by Red Hat Enterprise Linux 2.1 or 3. (CVE-2008-0948) Red Hat would like to thank MIT for reporting these issues. All krb5 users are advised to update to these erratum packages which contain backported fixes to correct these issues. 4. Solution: Before applying this update, make sure that all previously-released errata relevant to your system have been applied. This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at http://kbase.redhat.com/faq/FAQ_58_10188 5. Bugs fixed (http://bugzilla.redhat.com/): 432620 - CVE-2008-0062 krb5: uninitialized pointer use in krb5kdc 432621 - CVE-2008-0063 krb5: possible leak of sensitive data from krb5kdc using krb4 request 435087 - CVE-2008-0948 krb5: incorrect handling of high-numbered file descriptors in RPC library 6. Package List: Red Hat Enterprise Linux AS (Advanced Server) version 2.1 : Source: ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/krb5-1.2.2-48.src.rpm i386: krb5-devel-1.2.2-48.i386.rpm krb5-libs-1.2.2-48.i386.rpm krb5-server-1.2.2-48.i386.rpm krb5-workstation-1.2.2-48.i386.rpm ia64: krb5-devel-1.2.2-48.ia64.rpm krb5-libs-1.2.2-48.ia64.rpm krb5-server-1.2.2-48.ia64.rpm krb5-workstation-1.2.2-48.ia64.rpm Red Hat Linux Advanced Workstation 2.1: Source: ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/krb5-1.2.2-48.src.rpm ia64: krb5-devel-1.2.2-48.ia64.rpm krb5-libs-1.2.2-48.ia64.rpm krb5-server-1.2.2-48.ia64.rpm krb5-workstation-1.2.2-48.ia64.rpm Red Hat Enterprise Linux ES version 2.1: Source: ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/krb5-1.2.2-48.src.rpm i386: krb5-devel-1.2.2-48.i386.rpm krb5-libs-1.2.2-48.i386.rpm krb5-server-1.2.2-48.i386.rpm krb5-workstation-1.2.2-48.i386.rpm Red Hat Enterprise Linux WS version 2.1: Source: ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/krb5-1.2.2-48.src.rpm i386: krb5-devel-1.2.2-48.i386.rpm krb5-libs-1.2.2-48.i386.rpm krb5-server-1.2.2-48.i386.rpm krb5-workstation-1.2.2-48.i386.rpm Red Hat Enterprise Linux AS version 3: Source: ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/krb5-1.2.7-68.src.rpm i386: krb5-debuginfo-1.2.7-68.i386.rpm krb5-devel-1.2.7-68.i386.rpm krb5-libs-1.2.7-68.i386.rpm krb5-server-1.2.7-68.i386.rpm krb5-workstation-1.2.7-68.i386.rpm ia64: krb5-debuginfo-1.2.7-68.i386.rpm krb5-debuginfo-1.2.7-68.ia64.rpm krb5-devel-1.2.7-68.ia64.rpm krb5-libs-1.2.7-68.i386.rpm krb5-libs-1.2.7-68.ia64.rpm krb5-server-1.2.7-68.ia64.rpm krb5-workstation-1.2.7-68.ia64.rpm ppc: krb5-debuginfo-1.2.7-68.ppc.rpm krb5-debuginfo-1.2.7-68.ppc64.rpm krb5-devel-1.2.7-68.ppc.rpm krb5-libs-1.2.7-68.ppc.rpm krb5-libs-1.2.7-68.ppc64.rpm krb5-server-1.2.7-68.ppc.rpm krb5-workstation-1.2.7-68.ppc.rpm s390: krb5-debuginfo-1.2.7-68.s390.rpm krb5-devel-1.2.7-68.s390.rpm krb5-libs-1.2.7-68.s390.rpm krb5-server-1.2.7-68.s390.rpm krb5-workstation-1.2.7-68.s390.rpm s390x: krb5-debuginfo-1.2.7-68.s390.rpm krb5-debuginfo-1.2.7-68.s390x.rpm krb5-devel-1.2.7-68.s390x.rpm krb5-libs-1.2.7-68.s390.rpm krb5-libs-1.2.7-68.s390x.rpm krb5-server-1.2.7-68.s390x.rpm krb5-workstation-1.2.7-68.s390x.rpm x86_64: krb5-debuginfo-1.2.7-68.i386.rpm krb5-debuginfo-1.2.7-68.x86_64.rpm krb5-devel-1.2.7-68.x86_64.rpm krb5-libs-1.2.7-68.i386.rpm krb5-libs-1.2.7-68.x86_64.rpm krb5-server-1.2.7-68.x86_64.rpm krb5-workstation-1.2.7-68.x86_64.rpm Red Hat Desktop version 3: Source: ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/krb5-1.2.7-68.src.rpm i386: krb5-debuginfo-1.2.7-68.i386.rpm krb5-devel-1.2.7-68.i386.rpm krb5-libs-1.2.7-68.i386.rpm krb5-server-1.2.7-68.i386.rpm krb5-workstation-1.2.7-68.i386.rpm x86_64: krb5-debuginfo-1.2.7-68.i386.rpm krb5-debuginfo-1.2.7-68.x86_64.rpm krb5-devel-1.2.7-68.x86_64.rpm krb5-libs-1.2.7-68.i386.rpm krb5-libs-1.2.7-68.x86_64.rpm krb5-server-1.2.7-68.x86_64.rpm krb5-workstation-1.2.7-68.x86_64.rpm Red Hat Enterprise Linux ES version 3: Source: ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/krb5-1.2.7-68.src.rpm i386: krb5-debuginfo-1.2.7-68.i386.rpm krb5-devel-1.2.7-68.i386.rpm krb5-libs-1.2.7-68.i386.rpm krb5-server-1.2.7-68.i386.rpm krb5-workstation-1.2.7-68.i386.rpm ia64: krb5-debuginfo-1.2.7-68.i386.rpm krb5-debuginfo-1.2.7-68.ia64.rpm krb5-devel-1.2.7-68.ia64.rpm krb5-libs-1.2.7-68.i386.rpm krb5-libs-1.2.7-68.ia64.rpm krb5-server-1.2.7-68.ia64.rpm krb5-workstation-1.2.7-68.ia64.rpm x86_64: krb5-debuginfo-1.2.7-68.i386.rpm krb5-debuginfo-1.2.7-68.x86_64.rpm krb5-devel-1.2.7-68.x86_64.rpm krb5-libs-1.2.7-68.i386.rpm krb5-libs-1.2.7-68.x86_64.rpm krb5-server-1.2.7-68.x86_64.rpm krb5-workstation-1.2.7-68.x86_64.rpm Red Hat Enterprise Linux WS version 3: Source: ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/krb5-1.2.7-68.src.rpm i386: krb5-debuginfo-1.2.7-68.i386.rpm krb5-devel-1.2.7-68.i386.rpm krb5-libs-1.2.7-68.i386.rpm krb5-server-1.2.7-68.i386.rpm krb5-workstation-1.2.7-68.i386.rpm ia64: krb5-debuginfo-1.2.7-68.i386.rpm krb5-debuginfo-1.2.7-68.ia64.rpm krb5-devel-1.2.7-68.ia64.rpm krb5-libs-1.2.7-68.i386.rpm krb5-libs-1.2.7-68.ia64.rpm krb5-server-1.2.7-68.ia64.rpm krb5-workstation-1.2.7-68.ia64.rpm x86_64: krb5-debuginfo-1.2.7-68.i386.rpm krb5-debuginfo-1.2.7-68.x86_64.rpm krb5-devel-1.2.7-68.x86_64.rpm krb5-libs-1.2.7-68.i386.rpm krb5-libs-1.2.7-68.x86_64.rpm krb5-server-1.2.7-68.x86_64.rpm krb5-workstation-1.2.7-68.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://www.redhat.com/security/team/key/#package 7. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0062 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0063 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0948 http://www.redhat.com/security/updates/classification/#critical 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2008 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFH4BskXlSAg2UNWIIRAlglAJ9nAjW8nF7u4GTQHXFojwxCqtYm0gCffkFH k4nk4TL9YfMnzCOlZkhsFWk= =H3jL - -----END PGP SIGNATURE----- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Critical: krb5 security update Advisory ID: RHSA-2008:0182-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0182.html Issue date: 2008-03-18 CVE Names: CVE-2008-0062 CVE-2008-0063 ===================================================================== 1. Summary: Updated krb5 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 4.5 Extended Update Support. This update has been rated as having critical security impact by the Red Hat Security Response Team. 2. Relevant releases/architectures: Red Hat Enterprise Linux AS version 4.5.z - i386, ia64, ppc, s390, s390x, x86_64 Red Hat Enterprise Linux ES version 4.5.z - i386, ia64, x86_64 3. Description: Kerberos is a network authentication system which allows clients and servers to authenticate to each other through use of symmetric encryption and a trusted third party, the KDC. A flaw was found in the way the MIT Kerberos Authentication Service and Key Distribution Center server (krb5kdc) handled Kerberos v4 protocol packets. An unauthenticated remote attacker could use this flaw to crash the krb5kdc daemon, disclose portions of its memory, or possibly execute arbitrary code using malformed or truncated Kerberos v4 protocol requests. (CVE-2008-0062, CVE-2008-0063) This issue only affected krb5kdc with Kerberos v4 protocol compatibility enabled, which is the default setting on Red Hat Enterprise Linux 4. Kerberos v4 protocol support can be disabled by adding "v4_mode=none" (without the quotes) to the "[kdcdefaults]" section of /var/kerberos/krb5kdc/kdc.conf. Red Hat would like to thank MIT for reporting these issues. All krb5 users are advised to update to these erratum packages which contain backported fixes to correct these issues. 4. Solution: Before applying this update, make sure that all previously-released errata relevant to your system have been applied. This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at http://kbase.redhat.com/faq/FAQ_58_10188 5. Bugs fixed (http://bugzilla.redhat.com/): 432620 - CVE-2008-0062 krb5: uninitialized pointer use in krb5kdc 432621 - CVE-2008-0063 krb5: possible leak of sensitive data from krb5kdc using krb4 request 6. Package List: Red Hat Enterprise Linux AS version 4.5.z: Source: ftp://updates.redhat.com/enterprise/4AS-4.5.z/en/os/SRPMS/krb5-1.3.4-49.el4_5.1.src.rpm i386: krb5-debuginfo-1.3.4-49.el4_5.1.i386.rpm krb5-devel-1.3.4-49.el4_5.1.i386.rpm krb5-libs-1.3.4-49.el4_5.1.i386.rpm krb5-server-1.3.4-49.el4_5.1.i386.rpm krb5-workstation-1.3.4-49.el4_5.1.i386.rpm ia64: krb5-debuginfo-1.3.4-49.el4_5.1.i386.rpm krb5-debuginfo-1.3.4-49.el4_5.1.ia64.rpm krb5-devel-1.3.4-49.el4_5.1.ia64.rpm krb5-libs-1.3.4-49.el4_5.1.i386.rpm krb5-libs-1.3.4-49.el4_5.1.ia64.rpm krb5-server-1.3.4-49.el4_5.1.ia64.rpm krb5-workstation-1.3.4-49.el4_5.1.ia64.rpm ppc: krb5-debuginfo-1.3.4-49.el4_5.1.ppc.rpm krb5-debuginfo-1.3.4-49.el4_5.1.ppc64.rpm krb5-devel-1.3.4-49.el4_5.1.ppc.rpm krb5-libs-1.3.4-49.el4_5.1.ppc.rpm krb5-libs-1.3.4-49.el4_5.1.ppc64.rpm krb5-server-1.3.4-49.el4_5.1.ppc.rpm krb5-workstation-1.3.4-49.el4_5.1.ppc.rpm s390: krb5-debuginfo-1.3.4-49.el4_5.1.s390.rpm krb5-devel-1.3.4-49.el4_5.1.s390.rpm krb5-libs-1.3.4-49.el4_5.1.s390.rpm krb5-server-1.3.4-49.el4_5.1.s390.rpm krb5-workstation-1.3.4-49.el4_5.1.s390.rpm s390x: krb5-debuginfo-1.3.4-49.el4_5.1.s390.rpm krb5-debuginfo-1.3.4-49.el4_5.1.s390x.rpm krb5-devel-1.3.4-49.el4_5.1.s390x.rpm krb5-libs-1.3.4-49.el4_5.1.s390.rpm krb5-libs-1.3.4-49.el4_5.1.s390x.rpm krb5-server-1.3.4-49.el4_5.1.s390x.rpm krb5-workstation-1.3.4-49.el4_5.1.s390x.rpm x86_64: krb5-debuginfo-1.3.4-49.el4_5.1.i386.rpm krb5-debuginfo-1.3.4-49.el4_5.1.x86_64.rpm krb5-devel-1.3.4-49.el4_5.1.x86_64.rpm krb5-libs-1.3.4-49.el4_5.1.i386.rpm krb5-libs-1.3.4-49.el4_5.1.x86_64.rpm krb5-server-1.3.4-49.el4_5.1.x86_64.rpm krb5-workstation-1.3.4-49.el4_5.1.x86_64.rpm Red Hat Enterprise Linux ES version 4.5.z: Source: ftp://updates.redhat.com/enterprise/4ES-4.5.z/en/os/SRPMS/krb5-1.3.4-49.el4_5.1.src.rpm i386: krb5-debuginfo-1.3.4-49.el4_5.1.i386.rpm krb5-devel-1.3.4-49.el4_5.1.i386.rpm krb5-libs-1.3.4-49.el4_5.1.i386.rpm krb5-server-1.3.4-49.el4_5.1.i386.rpm krb5-workstation-1.3.4-49.el4_5.1.i386.rpm ia64: krb5-debuginfo-1.3.4-49.el4_5.1.i386.rpm krb5-debuginfo-1.3.4-49.el4_5.1.ia64.rpm krb5-devel-1.3.4-49.el4_5.1.ia64.rpm krb5-libs-1.3.4-49.el4_5.1.i386.rpm krb5-libs-1.3.4-49.el4_5.1.ia64.rpm krb5-server-1.3.4-49.el4_5.1.ia64.rpm krb5-workstation-1.3.4-49.el4_5.1.ia64.rpm x86_64: krb5-debuginfo-1.3.4-49.el4_5.1.i386.rpm krb5-debuginfo-1.3.4-49.el4_5.1.x86_64.rpm krb5-devel-1.3.4-49.el4_5.1.x86_64.rpm krb5-libs-1.3.4-49.el4_5.1.i386.rpm krb5-libs-1.3.4-49.el4_5.1.x86_64.rpm krb5-server-1.3.4-49.el4_5.1.x86_64.rpm krb5-workstation-1.3.4-49.el4_5.1.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://www.redhat.com/security/team/key/#package 7. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0062 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0063 http://www.redhat.com/security/updates/classification/#critical 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2008 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFH4BspXlSAg2UNWIIRAvpvAKCxupbvdQu8EoPphy/9Fke2DqHK2ACgxT8X 1KLf4GnNA3tZlh0d74oueJ0= =7McM - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBR+CO/ih9+71yA2DNAQItvAP/R/VQzTA//WNiAz5zHSmVMx9LTERHgxfl j3hCv2HhKYscYaOUphe7FZhGfB8AAfLt+kcRqRv0WpLVD+DMpT2NFYpSjT9irr2I f1Cfu+Im0Ezmkw0ipz7yzX5OxdTdtaYShw2nJnsWX8aybJ/HQzBzxfhyW6Ek+2Eo 3UnuCAJBV5Y= =j00W -----END PGP SIGNATURE-----