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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2005.0717 -- RHSA-2005:773-01 Important: mod_ssl security update 16 September 2005 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: mod_ssl Publisher: Red Hat Operating System: Red Hat Linux Advanced Workstation 2.1 Red Hat Enterprise Linux AS/ES/WS 2.1 Impact: Inappropriate Access Access: Remote/Unauthenticated CVE Names: CAN-2005-2700 Ref: ESB-2005.0697 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2005-773.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - --------------------------------------------------------------------- Red Hat Security Advisory Synopsis: Important: mod_ssl security update Advisory ID: RHSA-2005:773-01 Advisory URL: https://rhn.redhat.com/errata/RHSA-2005-773.html Issue date: 2005-09-15 Updated on: 2005-09-15 Product: Red Hat Enterprise Linux CVE Names: CAN-2005-2700 - - --------------------------------------------------------------------- 1. Summary: An updated mod_ssl package for Apache that corrects a security issue is now available. This update has been rated as having important 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 3. Problem description: The mod_ssl module provides strong cryptography for the Apache Web server via the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols. A flaw was discovered in mod_ssl's handling of the "SSLVerifyClient" directive. This flaw occurs if a virtual host is configured using "SSLVerifyClient optional" and a directive "SSLVerifyClient required" is set for a specific location. For servers configured in this fashion, an attacker may be able to access resources that should otherwise be protected, by not supplying a client certificate when connecting. The Common Vulnerabilities and Exposures project assigned the name CAN-2005-2700 to this issue. Users of mod_ssl should upgrade to this updated package, which contains a backported patch to correct this issue. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. This update is available via Red Hat Network. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date This will start an interactive process that will result in the appropriate RPMs being upgraded on your system. 5. Bug IDs fixed (http://bugzilla.redhat.com/): 167195 - CAN-2005-2700 SSLVerifyClient flaw 6. RPMs required: Red Hat Enterprise Linux AS (Advanced Server) version 2.1: SRPMS: ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/mod_ssl-2.8.12-8.src.rpm 70c9491a26f4192159f0874a415f32f4 mod_ssl-2.8.12-8.src.rpm i386: a8b75736c811bd68b755505e156e4904 mod_ssl-2.8.12-8.i386.rpm ia64: b24dc850c203e5c354773b07a6c19a5a mod_ssl-2.8.12-8.ia64.rpm Red Hat Linux Advanced Workstation 2.1: SRPMS: ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/mod_ssl-2.8.12-8.src.rpm 70c9491a26f4192159f0874a415f32f4 mod_ssl-2.8.12-8.src.rpm ia64: b24dc850c203e5c354773b07a6c19a5a mod_ssl-2.8.12-8.ia64.rpm Red Hat Enterprise Linux ES version 2.1: SRPMS: ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/mod_ssl-2.8.12-8.src.rpm 70c9491a26f4192159f0874a415f32f4 mod_ssl-2.8.12-8.src.rpm i386: a8b75736c811bd68b755505e156e4904 mod_ssl-2.8.12-8.i386.rpm Red Hat Enterprise Linux WS version 2.1: SRPMS: ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/mod_ssl-2.8.12-8.src.rpm 70c9491a26f4192159f0874a415f32f4 mod_ssl-2.8.12-8.src.rpm i386: a8b75736c811bd68b755505e156e4904 mod_ssl-2.8.12-8.i386.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=CAN-2005-2700 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) iD8DBQFDKbt7XlSAg2UNWIIRAjifAJ9lpTZe779xZD6nC8/nvqc0UlNKmwCfUAGI dcHCN4153kcIFkQkMaaUoqQ= =CozS - -----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 iQCVAwUBQyo1uyh9+71yA2DNAQKU+wP+Kq5zZti1OqWm9uHxUrejM2WzLD9Dr6nd b0ynccR2K18uHZAmJPwasnIXx07+RPqETFEaAzfpl4tFrNvgLywLlQdBzgZe3GEF YEcu18U3mHfwsguRHR229JHkOzLKKZFIk3zxtpGk6sWyJDRf4fb8pvHPK5coZMOt IKzlw1MBYLs= =x8Ah -----END PGP SIGNATURE-----