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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2005.0144 -- RHSA-2005:061-01 Updated Squid package fixes security issues 14 February 2005 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Squid Publisher: Red Hat Operating System: Red Hat Enterprise Linux AS/ES/WS 3 Red Hat Desktop version 3 Red Hat Enterprise Linux AS/ES/WS 2.1 Red Hat Linux Advanced Workstation 2.1 Linux variants UNIX variants Windows Impact: Execute Arbitrary Code/Commands Denial of Service Reduced Security Access: Remote/Unauthenticated CVE Names: CAN-2005-0241 CAN-2005-0211 CAN-2005-0175 CAN-2005-0174 CAN-2005-0173 CAN-2005-0097 CAN-2005-0096 CAN-2005-0095 CAN-2005-0094 Ref: ESB-2005.0108 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2005-061.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - --------------------------------------------------------------------- Red Hat Security Advisory Synopsis: Updated Squid package fixes security issues Advisory ID: RHSA-2005:061-01 Advisory URL: https://rhn.redhat.com/errata/RHSA-2005-061.html Issue date: 2005-02-11 Updated on: 2005-02-11 Product: Red Hat Enterprise Linux CVE Names: CAN-2005-0094 CAN-2005-0095 CAN-2005-0096 CAN-2005-0097 CAN-2005-0173 CAN-2005-0174 CAN-2005-0175 CAN-2005-0211 CAN-2005-0241 - - --------------------------------------------------------------------- 1. Summary: An updated Squid package that fixes several security issues is now available. 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 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. Problem description: Squid is a full-featured Web proxy cache. A buffer overflow flaw was found in the Gopher relay parser. This bug could allow a remote Gopher server to crash the Squid proxy that reads data from it. Although Gopher servers are now quite rare, a malicious web page (for example) could redirect or contain a frame pointing to an attacker's malicious gopher server. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0094 to this issue. An integer overflow flaw was found in the WCCP message parser. It is possible to crash the Squid server if an attacker is able to send a malformed WCCP message with a spoofed source address matching Squid's "home router". The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0095 to this issue. A memory leak was found in the NTLM fakeauth_auth helper. It is possible that an attacker could place the Squid server under high load, causing the NTML fakeauth_auth helper to consume a large amount of memory, resulting in a denial of service. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0096 to this issue. A NULL pointer de-reference bug was found in the NTLM fakeauth_auth helper. It is possible for an attacker to send a malformed NTLM type 3 message, causing the Squid server to crash. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0097 to this issue. A username validation bug was found in squid_ldap_auth. It is possible for a username to be padded with spaces, which could allow a user to bypass explicit access control rules or confuse accounting. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0173 to this issue. The way Squid handles HTTP responses was found to need strengthening. It is possible that a malicious web server could send a series of HTTP responses in such a way that the Squid cache could be poisoned, presenting users with incorrect webpages. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CAN-2005-0174 and CAN-2005-0175 to these issues. A bug was found in the way Squid handled oversized HTTP response headers. It is possible that a malicious web server could send a specially crafted HTTP header which could cause the Squid cache to be poisoned, presenting users with incorrect webpages. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0241 to this issue. A buffer overflow bug was found in the WCCP message parser. It is possible that an attacker could send a malformed WCCP message which could crash the Squid server or execute arbitrary code. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0211 to this issue. Users of Squid should upgrade to this updated package, which contains backported patches, and is not vulnerable to these issues. 4. Solution: Before applying this update, make sure that all previously-released errata relevant to your system have been applied. Use Red Hat Network to download and update your packages. To launch the Red Hat Update Agent, use the following command: up2date For information on how to install packages manually, refer to the following Web page for the System Administration or Customization guide specific to your system: http://www.redhat.com/docs/manuals/enterprise/ 5. Bug IDs fixed (http://bugzilla.redhat.com/): 145540 - CAN-2005-0094 Multiple issues with squid (CAN-2005-0095 CAN-2005-0096 CAN-2005-0097) 146159 - CAN-2005-0173 Multiple squid issues (CAN-2005-0174 CAN-2005-0175) 146780 - CAN-2005-0241 Correct handling of oversized reply headers 6. RPMs required: Red Hat Enterprise Linux AS (Advanced Server) version 2.1: SRPMS: ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/squid-2.4.STABLE7-1.21as.4.src.rpm 95b8c52d164e1178ca73d0f7751fe920 squid-2.4.STABLE7-1.21as.4.src.rpm i386: a950517eec9d75e9f9255c22098cb942 squid-2.4.STABLE7-1.21as.4.i386.rpm ia64: 223ad64e00405758e505b1412a83ca65 squid-2.4.STABLE7-1.21as.4.ia64.rpm Red Hat Linux Advanced Workstation 2.1: SRPMS: ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/squid-2.4.STABLE7-1.21as.4.src.rpm 95b8c52d164e1178ca73d0f7751fe920 squid-2.4.STABLE7-1.21as.4.src.rpm ia64: 223ad64e00405758e505b1412a83ca65 squid-2.4.STABLE7-1.21as.4.ia64.rpm Red Hat Enterprise Linux ES version 2.1: SRPMS: ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/squid-2.4.STABLE7-1.21as.4.src.rpm 95b8c52d164e1178ca73d0f7751fe920 squid-2.4.STABLE7-1.21as.4.src.rpm i386: a950517eec9d75e9f9255c22098cb942 squid-2.4.STABLE7-1.21as.4.i386.rpm Red Hat Enterprise Linux AS version 3: SRPMS: ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/squid-2.5.STABLE3-6.3E.7.src.rpm d8641aa493868a48143ff7ad71fb515a squid-2.5.STABLE3-6.3E.7.src.rpm i386: 3da9a078535a549a941c35dd4efcb07e squid-2.5.STABLE3-6.3E.7.i386.rpm ia64: 44ba7d01ebfde6643bbca67ed612f71e squid-2.5.STABLE3-6.3E.7.ia64.rpm ppc: eeabefd918d66aed11cfc1b28403b141 squid-2.5.STABLE3-6.3E.7.ppc.rpm s390: 7a2b9540c7b55ee44984f796e39d806d squid-2.5.STABLE3-6.3E.7.s390.rpm s390x: 372366d5fbaa404527a43e9de8f46cdd squid-2.5.STABLE3-6.3E.7.s390x.rpm x86_64: cd4a5c1528339547803f7784a494ef61 squid-2.5.STABLE3-6.3E.7.x86_64.rpm Red Hat Desktop version 3: SRPMS: ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/squid-2.5.STABLE3-6.3E.7.src.rpm d8641aa493868a48143ff7ad71fb515a squid-2.5.STABLE3-6.3E.7.src.rpm i386: 3da9a078535a549a941c35dd4efcb07e squid-2.5.STABLE3-6.3E.7.i386.rpm x86_64: cd4a5c1528339547803f7784a494ef61 squid-2.5.STABLE3-6.3E.7.x86_64.rpm Red Hat Enterprise Linux ES version 3: SRPMS: ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/squid-2.5.STABLE3-6.3E.7.src.rpm d8641aa493868a48143ff7ad71fb515a squid-2.5.STABLE3-6.3E.7.src.rpm i386: 3da9a078535a549a941c35dd4efcb07e squid-2.5.STABLE3-6.3E.7.i386.rpm ia64: 44ba7d01ebfde6643bbca67ed612f71e squid-2.5.STABLE3-6.3E.7.ia64.rpm x86_64: cd4a5c1528339547803f7784a494ef61 squid-2.5.STABLE3-6.3E.7.x86_64.rpm Red Hat Enterprise Linux WS version 3: SRPMS: ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/squid-2.5.STABLE3-6.3E.7.src.rpm d8641aa493868a48143ff7ad71fb515a squid-2.5.STABLE3-6.3E.7.src.rpm i386: 3da9a078535a549a941c35dd4efcb07e squid-2.5.STABLE3-6.3E.7.i386.rpm ia64: 44ba7d01ebfde6643bbca67ed612f71e squid-2.5.STABLE3-6.3E.7.ia64.rpm x86_64: cd4a5c1528339547803f7784a494ef61 squid-2.5.STABLE3-6.3E.7.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://www.squid-cache.org/Advisories/SQUID-2005_1.txt http://www.squid-cache.org/Advisories/SQUID-2005_2.txt http://www.squid-cache.org/Advisories/SQUID-2005_3.txt http://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE7-fakeauth_auth http://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE7-ldap_spaces http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0094 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0095 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0096 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0097 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0173 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0174 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0175 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0211 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0241 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2005 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iD8DBQFCDLgwXlSAg2UNWIIRAijmAJ9RPVzVaX2fDMS9Qs032YUMt3BHTQCgl9Mb HTTQgPJBJ8xIXwFBTezCvZ0= =OsgH - -----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. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBQg/m2yh9+71yA2DNAQK6tAP+IzPYENEemzAik9EB24U/q47Bt/Dwcj9u gnUmFrIIq4bCNTTumgiFhiugsV87I8wEzwm1+TuwYF5xx7dVFbVrbJeHz7rAZvmX lDLYjUL277EqRSrteoXU/rTD/bYqS9VY1fSEpKjaYP2EvlKYoyluV7kN46NUACj3 I7Szo0FNu44= =wBmr -----END PGP SIGNATURE-----