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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2009.1271 Moderate: fetchmail security update 9 September 2009 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: fetchmail Publisher: Red Hat Operating System: Red Hat Enterprise Linux AS/ES/WS 3 Red Hat Enterprise Linux Desktop 4 Red Hat Enterprise Linux WS/Desktop 5 Red Hat Enterprise Linux Server 5 Impact/Access: Provide Misleading Information -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2009-2666 CVE-2008-2711 CVE-2007-4565 Reference: AA-2008.0136 ESB-2009.1142 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2009-1427.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: fetchmail security update Advisory ID: RHSA-2009:1427-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2009-1427.html Issue date: 2009-09-08 CVE Names: CVE-2007-4565 CVE-2008-2711 CVE-2009-2666 ===================================================================== 1. Summary: An updated fetchmail package that fixes multiple security issues is now available for Red Hat Enterprise Linux 3, 4, and 5. This update has been rated as having moderate security impact by the Red Hat Security Response Team. 2. Relevant releases/architectures: 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 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 RHEL Desktop Workstation (v. 5 client) - i386, x86_64 Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 3. Description: Fetchmail is a remote mail retrieval and forwarding utility intended for use over on-demand TCP/IP links, such as SLIP and PPP connections. It was discovered that fetchmail is affected by the previously published "null prefix attack", caused by incorrect handling of NULL characters in X.509 certificates. If an attacker is able to get a carefully-crafted certificate signed by a trusted Certificate Authority, the attacker could use the certificate during a man-in-the-middle attack and potentially confuse fetchmail into accepting it by mistake. (CVE-2009-2666) A flaw was found in the way fetchmail handles rejections from a remote SMTP server when sending warning mail to the postmaster. If fetchmail sent a warning mail to the postmaster of an SMTP server and that SMTP server rejected it, fetchmail could crash. (CVE-2007-4565) A flaw was found in fetchmail. When fetchmail is run in double verbose mode ("-v -v"), it could crash upon receiving certain, malformed mail messages with long headers. A remote attacker could use this flaw to cause a denial of service if fetchmail was also running in daemon mode ("-d"). (CVE-2008-2711) Note: when using SSL-enabled services, it is recommended that the fetchmail "--sslcertck" option be used to enforce strict SSL certificate checking. All fetchmail users should upgrade to this updated package, which contains backported patches to correct these issues. If fetchmail is running in daemon mode, it must be restarted for this update to take effect (use the "fetchmail --quit" command to stop the fetchmail process). 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/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 260601 - CVE-2007-4565 Fetchmail NULL pointer dereference 451758 - CVE-2008-2711 fetchmail: Crash in large log messages in verbose mode 515804 - CVE-2009-2666 fetchmail: SSL null terminator bypass 6. Package List: Red Hat Enterprise Linux AS version 3: Source: ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/fetchmail-6.2.0-3.el3.5.src.rpm i386: fetchmail-6.2.0-3.el3.5.i386.rpm fetchmail-debuginfo-6.2.0-3.el3.5.i386.rpm ia64: fetchmail-6.2.0-3.el3.5.ia64.rpm fetchmail-debuginfo-6.2.0-3.el3.5.ia64.rpm ppc: fetchmail-6.2.0-3.el3.5.ppc.rpm fetchmail-debuginfo-6.2.0-3.el3.5.ppc.rpm s390: fetchmail-6.2.0-3.el3.5.s390.rpm fetchmail-debuginfo-6.2.0-3.el3.5.s390.rpm s390x: fetchmail-6.2.0-3.el3.5.s390x.rpm fetchmail-debuginfo-6.2.0-3.el3.5.s390x.rpm x86_64: fetchmail-6.2.0-3.el3.5.x86_64.rpm fetchmail-debuginfo-6.2.0-3.el3.5.x86_64.rpm Red Hat Desktop version 3: Source: ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/fetchmail-6.2.0-3.el3.5.src.rpm i386: fetchmail-6.2.0-3.el3.5.i386.rpm fetchmail-debuginfo-6.2.0-3.el3.5.i386.rpm x86_64: fetchmail-6.2.0-3.el3.5.x86_64.rpm fetchmail-debuginfo-6.2.0-3.el3.5.x86_64.rpm Red Hat Enterprise Linux ES version 3: Source: ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/fetchmail-6.2.0-3.el3.5.src.rpm i386: fetchmail-6.2.0-3.el3.5.i386.rpm fetchmail-debuginfo-6.2.0-3.el3.5.i386.rpm ia64: fetchmail-6.2.0-3.el3.5.ia64.rpm fetchmail-debuginfo-6.2.0-3.el3.5.ia64.rpm x86_64: fetchmail-6.2.0-3.el3.5.x86_64.rpm fetchmail-debuginfo-6.2.0-3.el3.5.x86_64.rpm Red Hat Enterprise Linux WS version 3: Source: ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/fetchmail-6.2.0-3.el3.5.src.rpm i386: fetchmail-6.2.0-3.el3.5.i386.rpm fetchmail-debuginfo-6.2.0-3.el3.5.i386.rpm ia64: fetchmail-6.2.0-3.el3.5.ia64.rpm fetchmail-debuginfo-6.2.0-3.el3.5.ia64.rpm x86_64: fetchmail-6.2.0-3.el3.5.x86_64.rpm fetchmail-debuginfo-6.2.0-3.el3.5.x86_64.rpm Red Hat Enterprise Linux AS version 4: Source: ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/fetchmail-6.2.5-6.0.1.el4_8.1.src.rpm i386: fetchmail-6.2.5-6.0.1.el4_8.1.i386.rpm fetchmail-debuginfo-6.2.5-6.0.1.el4_8.1.i386.rpm ia64: fetchmail-6.2.5-6.0.1.el4_8.1.ia64.rpm fetchmail-debuginfo-6.2.5-6.0.1.el4_8.1.ia64.rpm ppc: fetchmail-6.2.5-6.0.1.el4_8.1.ppc.rpm fetchmail-debuginfo-6.2.5-6.0.1.el4_8.1.ppc.rpm s390: fetchmail-6.2.5-6.0.1.el4_8.1.s390.rpm fetchmail-debuginfo-6.2.5-6.0.1.el4_8.1.s390.rpm s390x: fetchmail-6.2.5-6.0.1.el4_8.1.s390x.rpm fetchmail-debuginfo-6.2.5-6.0.1.el4_8.1.s390x.rpm x86_64: fetchmail-6.2.5-6.0.1.el4_8.1.x86_64.rpm fetchmail-debuginfo-6.2.5-6.0.1.el4_8.1.x86_64.rpm Red Hat Enterprise Linux Desktop version 4: Source: ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/fetchmail-6.2.5-6.0.1.el4_8.1.src.rpm i386: fetchmail-6.2.5-6.0.1.el4_8.1.i386.rpm fetchmail-debuginfo-6.2.5-6.0.1.el4_8.1.i386.rpm x86_64: fetchmail-6.2.5-6.0.1.el4_8.1.x86_64.rpm fetchmail-debuginfo-6.2.5-6.0.1.el4_8.1.x86_64.rpm Red Hat Enterprise Linux ES version 4: Source: ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/fetchmail-6.2.5-6.0.1.el4_8.1.src.rpm i386: fetchmail-6.2.5-6.0.1.el4_8.1.i386.rpm fetchmail-debuginfo-6.2.5-6.0.1.el4_8.1.i386.rpm ia64: fetchmail-6.2.5-6.0.1.el4_8.1.ia64.rpm fetchmail-debuginfo-6.2.5-6.0.1.el4_8.1.ia64.rpm x86_64: fetchmail-6.2.5-6.0.1.el4_8.1.x86_64.rpm fetchmail-debuginfo-6.2.5-6.0.1.el4_8.1.x86_64.rpm Red Hat Enterprise Linux WS version 4: Source: ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/fetchmail-6.2.5-6.0.1.el4_8.1.src.rpm i386: fetchmail-6.2.5-6.0.1.el4_8.1.i386.rpm fetchmail-debuginfo-6.2.5-6.0.1.el4_8.1.i386.rpm ia64: fetchmail-6.2.5-6.0.1.el4_8.1.ia64.rpm fetchmail-debuginfo-6.2.5-6.0.1.el4_8.1.ia64.rpm x86_64: fetchmail-6.2.5-6.0.1.el4_8.1.x86_64.rpm fetchmail-debuginfo-6.2.5-6.0.1.el4_8.1.x86_64.rpm RHEL Desktop Workstation (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/fetchmail-6.3.6-1.1.el5_3.1.src.rpm i386: fetchmail-6.3.6-1.1.el5_3.1.i386.rpm fetchmail-debuginfo-6.3.6-1.1.el5_3.1.i386.rpm x86_64: fetchmail-6.3.6-1.1.el5_3.1.x86_64.rpm fetchmail-debuginfo-6.3.6-1.1.el5_3.1.x86_64.rpm Red Hat Enterprise Linux (v. 5 server): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/fetchmail-6.3.6-1.1.el5_3.1.src.rpm i386: fetchmail-6.3.6-1.1.el5_3.1.i386.rpm fetchmail-debuginfo-6.3.6-1.1.el5_3.1.i386.rpm ia64: fetchmail-6.3.6-1.1.el5_3.1.ia64.rpm fetchmail-debuginfo-6.3.6-1.1.el5_3.1.ia64.rpm ppc: fetchmail-6.3.6-1.1.el5_3.1.ppc.rpm fetchmail-debuginfo-6.3.6-1.1.el5_3.1.ppc.rpm s390x: fetchmail-6.3.6-1.1.el5_3.1.s390x.rpm fetchmail-debuginfo-6.3.6-1.1.el5_3.1.s390x.rpm x86_64: fetchmail-6.3.6-1.1.el5_3.1.x86_64.rpm fetchmail-debuginfo-6.3.6-1.1.el5_3.1.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-2007-4565 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2711 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2666 http://www.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2009 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFKpn40XlSAg2UNWIIRAt+aAKCYcJCAoG3hKpdS8+ToLeKFbSY+0ACfW1HK 6cxSCqhXF2Mh76xUL1CRBWM= =w9r2 - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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