RHSA-2005:773

Vulnerability from csaf_redhat - Published: 2005-09-15 18:16 - Updated: 2026-06-28 12:07
Summary
Red Hat Security Advisory: mod_ssl security update
Severity
Important
Notes
Topic: 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.
Details: 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.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2005-2700

ssl_engine_kernel.c in mod_ssl before 2.8.24, when using "SSLVerifyClient optional" in the global virtual host configuration, does not properly enforce "SSLVerifyClient require" in a per-location context, which allows remote attackers to bypass intended access restrictions.

Affected products
Product Identifier Version Remediation
Red Hat Enterprise Linux AS (Advanced Server) version 2.1
Red Hat / Red Hat Enterprise Linux
 cpe:/o:redhat:enterprise_linux:2.1::as —
Vendor Fix fix
Red Hat Enterprise Linux ES version 2.1
Red Hat / Red Hat Enterprise Linux
 cpe:/o:redhat:enterprise_linux:2.1::es —
Vendor Fix fix
Red Hat Enterprise Linux WS version 2.1
Red Hat / Red Hat Enterprise Linux
 cpe:/o:redhat:enterprise_linux:2.1::ws —
Vendor Fix fix
Red Hat Linux Advanced Workstation 2.1
Red Hat / Red Hat Enterprise Linux
 cpe:/o:redhat:enterprise_linux:2.1::aw —
Vendor Fix fix
Threats
Impact Important
References
To clipboard 

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