Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2006.0172 -- [RedHat] Moderate: squid security update 8 March 2006 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Squid Publisher: Red Hat Operating System: Red Hat Enterprise Linux AS/ES/WS 4 Red Hat Enterprise Linux Desktop 4 Impact: Denial of Service Access: Remote/Unauthenticated CVE Names: CVE-2005-2917 Ref: ESB-2005.0762 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2006-0052.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - --------------------------------------------------------------------- Red Hat Security Advisory Synopsis: Moderate: squid security update Advisory ID: RHSA-2006:0052-01 Advisory URL: https://rhn.redhat.com/errata/RHSA-2006-0052.html Issue date: 2006-03-07 Updated on: 2006-03-07 Product: Red Hat Enterprise Linux CVE Names: CVE-2005-2917 - - --------------------------------------------------------------------- 1. Summary: An updated squid package that fixes a security vulnerability as well as several issues is now available. 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 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. Problem description: Squid is a high-performance proxy caching server for Web clients, supporting FTP, gopher, and HTTP data objects. A denial of service flaw was found in the way squid processes certain NTLM authentication requests. It is possible for a remote attacker to crash the Squid server by sending a specially crafted NTLM authentication request. The Common Vulnerabilities and Exposures project (cve.mitre.org) assigned the name CVE-2005-2917 to this issue. The following issues have also been fixed in this update: * An error introduced in squid-2.5.STABLE6-3.4E.12 can crash Squid when a user visits a site that has a bit longer DNS record. * An error introduced in the old package prevented Squid from returning correct information about large file systems. The new package is compiled with the IDENT lookup support so that users who want to use it do not have to recompile it. * Some authentication helpers needed SETUID rights but did not have them. If administrators wanted to use cache administrator, they had to change the SETUID bit manually. The updated package sets this bit so the new package can be updated without manual intervention from administrators. * Squid could not handle a reply from an HTTP server when the reply began with the new-line character. * An issue was discovered when a reply from an HTTP server was not HTTP 1.0 or 1.1 compliant. * The updated package keeps user-defined error pages when the package is updated and it adds new ones. All users of squid should upgrade to this updated package, which resolves 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/): 160704 - squid child processes exit with signal 6.. squid crashes 162660 - pam authentication fails 168378 - CVE-2005-2917 Squid malformed NTLM authentication DoS 170399 - Squid blocks page served by broken server 172375 - Error pages should not be replaced by updates 172392 - One translated Polish language error is missing preventing squid from startup 172697 - Squid doesn't handle headers split across packets 6. RPMs required: Red Hat Enterprise Linux AS version 4: SRPMS: ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/squid-2.5.STABLE6-3.4E.12.src.rpm 9fe34dfe64e9ee9c41e3bc7d1045a322 squid-2.5.STABLE6-3.4E.12.src.rpm i386: 6723c05cd3f3e4820202ccb7ef36d87f squid-2.5.STABLE6-3.4E.12.i386.rpm ia64: e94cb0ab3f6cb32211daaa7fcc990d60 squid-2.5.STABLE6-3.4E.12.ia64.rpm ppc: 0fbfee738f1c6fb25b35f2f5ed5dda91 squid-2.5.STABLE6-3.4E.12.ppc.rpm s390: 558e14fde06db116b71eefbe260acbd4 squid-2.5.STABLE6-3.4E.12.s390.rpm s390x: 178d3cc52c236dece99bbb487e741f6a squid-2.5.STABLE6-3.4E.12.s390x.rpm x86_64: b830bea5e588962f2d47fe20870c99ef squid-2.5.STABLE6-3.4E.12.x86_64.rpm Red Hat Enterprise Linux Desktop version 4: SRPMS: ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/squid-2.5.STABLE6-3.4E.12.src.rpm 9fe34dfe64e9ee9c41e3bc7d1045a322 squid-2.5.STABLE6-3.4E.12.src.rpm i386: 6723c05cd3f3e4820202ccb7ef36d87f squid-2.5.STABLE6-3.4E.12.i386.rpm x86_64: b830bea5e588962f2d47fe20870c99ef squid-2.5.STABLE6-3.4E.12.x86_64.rpm Red Hat Enterprise Linux ES version 4: SRPMS: ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/squid-2.5.STABLE6-3.4E.12.src.rpm 9fe34dfe64e9ee9c41e3bc7d1045a322 squid-2.5.STABLE6-3.4E.12.src.rpm i386: 6723c05cd3f3e4820202ccb7ef36d87f squid-2.5.STABLE6-3.4E.12.i386.rpm ia64: e94cb0ab3f6cb32211daaa7fcc990d60 squid-2.5.STABLE6-3.4E.12.ia64.rpm x86_64: b830bea5e588962f2d47fe20870c99ef squid-2.5.STABLE6-3.4E.12.x86_64.rpm Red Hat Enterprise Linux WS version 4: SRPMS: ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/squid-2.5.STABLE6-3.4E.12.src.rpm 9fe34dfe64e9ee9c41e3bc7d1045a322 squid-2.5.STABLE6-3.4E.12.src.rpm i386: 6723c05cd3f3e4820202ccb7ef36d87f squid-2.5.STABLE6-3.4E.12.i386.rpm ia64: e94cb0ab3f6cb32211daaa7fcc990d60 squid-2.5.STABLE6-3.4E.12.ia64.rpm x86_64: b830bea5e588962f2d47fe20870c99ef squid-2.5.STABLE6-3.4E.12.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-2005-2917 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2006 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iD8DBQFEDa0fXlSAg2UNWIIRAlKKAJ9b0ou7hKpWzLmRcHnF2tzo7WsDEACfcjep 7AjHhQpKB+NHshpA/CICBYc= =dDSN - -----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 iQCVAwUBRA4xOSh9+71yA2DNAQJUQQP/WkFfpV9ytPxNCfUSV62Q4Ti9rUwgITQ0 S/1Qslx4AX3pnEoI8zlJy3Kn8sAPyai8BI6qPaxk8ViF5y96SgxewWy1nmVSbObU TEflQelbr9ucGtLbrmQYAfRG/Vz06YsBfYDt+vwOe/XEJ7pWhOMME2I5qntqv3mY wht1Ck+cS2A= =QsGX -----END PGP SIGNATURE-----