1. Gentoo Linux Security Advisory
| Advisory Reference | GLSA 200509-12 / Apache |
| Release Date | September 19, 2005 |
| Latest Revision | December 30, 2007: 03 |
| Impact | normal |
| Exploitable | remote and local |
| Package | Vulnerable versions | Unaffected versions | Architecture(s) |
| net-www/mod_ssl | < 2.8.24 | >= 2.8.24 | All supported architectures |
| www-servers/apache | < 2.0.54-r15 | >= 2.0.54-r15, < 2 | All supported architectures |
Related bugreports: #103554, #104807
mod_ssl and Apache are vulnerable to a restriction bypass and a potential local privilege escalation.
The Apache HTTP server is one of the most popular web servers on the Internet. mod_ssl provides SSL v2/v3 and TLS v1 support for Apache 1.3 and is also included in Apache 2.
mod_ssl contains a security issue when "SSLVerifyClient optional" is configured in the global virtual host configuration (CAN-2005-2700). Also, Apache's httpd includes a PCRE library, which makes it vulnerable to an integer overflow (CAN-2005-2491).
Under a specific configuration, mod_ssl does not properly enforce the client-based certificate authentication directive, "SSLVerifyClient require", in a per-location context, which could be potentially used by a remote attacker to bypass some restrictions. By creating a specially crafted ".htaccess" file, a local attacker could possibly exploit Apache's vulnerability, which would result in a local privilege escalation.
There is no known workaround at this time.
All mod_ssl users should upgrade to the latest version:
Code Listing 3.1: Resolution |
# emerge --sync # emerge --ask --oneshot --verbose ">=net-www/mod_ssl-2.8.24" |
All Apache 2 users should upgrade to the latest version:
Code Listing 3.2: Resolution |
# emerge --sync # emerge --ask --oneshot --verbose ">=www-servers/apache-2.0.54-r15" |