RHSA-2005:773 - Security Advisory
Security Advisory: Important
An updated mod_ssl package for Apache that corrects a security issue is now
This update has been rated as having important security impact by the Red
Hat Security Response Team.
The mod_ssl module provides strong cryptography for the Apache Web
server via the Secure Sockets Layer (SSL) and Transport Layer Security
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.
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:
This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.
- Red Hat Enterprise Linux Server 2 ia64
- Red Hat Enterprise Linux Server 2 i386
- Red Hat Enterprise Linux Workstation 2 ia64
- Red Hat Enterprise Linux Workstation 2 i386
- BZ - 167195 - CAN-2005-2700 SSLVerifyClient flaw
Red Hat Enterprise Linux Server 2
Red Hat Enterprise Linux Workstation 2