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Home >> Browse Vulnerability Assessment Database >> Debian Local Security Checks >> [DSA120] DSA-120-1 mod_ssl

Vulnerability Assessment Details

[DSA120] DSA-120-1 mod_ssl

Vulnerability Assessment Summary
DSA-120-1 mod_ssl

Detailed Explanation for this Vulnerability Assessment

Ed Moyle recently
found a buffer overflow in Apache-SSL and mod_ssl.
With session caching enabled, mod_ssl will serialize SSL session
variables to store them for later use. These variables were stored in
a buffer of a fixed size without proper boundary checks.
To exploit the overflow, the server must be configured to require client
certificates, and a possible hacker must obtain a carefully crafted client
certificate that has been signed by a Certificate Authority which is
trusted by the server. If these conditions are met, it would be possible
for a possible hacker to execute arbitrary code on the server.
This problem has been fixed in version 1.3.9.13-4 of Apache-SSL and
version 2.4.10-1.3.9-1potato1 of libapache-mod-ssl for the stable
Debian distribution as well as in version 1.3.23.1+1.47-1 of
Apache-SSL and version 2.8.7-1 of libapache-mod-ssl for the testing
and unstable distribution of Debian.
We recommend that you upgrade your Apache-SSL and mod_ssl packages.

Solution : http://www.debian.org/security/2002/dsa-120
Network Security Threat Level: High

Networks Security ID:

Vulnerability Assessment Copyright: This script is (C) 2005 Michel Arboi

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