Vulnerability Assessment & Network Security Forums
If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.
Vulnerability Assessment Details
apache2, libapache-mod-ssl vulnerabilities
Detailed Explanation for this Vulnerability Assessment
These remote packages are missing security patches :
Apache did not honour the "SSLVerifyClient require" directive within a
directive "SSLVerifyClient optional". This permited clients to bypass
client certificate validation on servers with the above configuration.
Filip Sneppe discovered a Denial of Service vulnerability in the byte
range filter handler. By requesting certain large byte ranges, a
remote attacker could cause memory exhaustion in the server.
The updated libapache-mod-ssl also fixes two older Denial of Service
vulnerabilities: A format string error in the ssl_log() function which
could be exploited to crash the server (CVE-2004-0700), and a flaw in
the SSL cipher negotiation which could be exploited to terminate a
session (CVE-2004-0885). Please note that Apache 1.3 and
libapache-mod-ssl are not officially supported (they are in the
"universe" component of the Ubuntu archive).
Upgrade to :
- apache2-2.0.53-5ubuntu5.3 (Ubuntu 5.04)
- apache2-common-2.0.53-5ubuntu5.3 (Ubuntu 5.04)
- apache2-doc-2.0.53-5ubuntu5.3 (Ubuntu 5.04)
- apache2-mpm-perchild-2.0.53-5ubuntu5.3 (Ubuntu 5.04)
- apache2-mpm-prefork-2.0.53-5ubuntu5.3 (Ubuntu 5.04)
- apache2-mpm-threadpool-2.0.53-5ubuntu5.3 (Ubuntu 5.04)
- apache2-mpm-worker-2.0.53-5ubuntu5.3 (Ubuntu 5.04)
- apache2-prefork-dev-2.0.53-5ubuntu5.3 (Ubuntu 5.04)
- apache2-threaded-dev-2.0.53-5ubuntu5.3 (Ubuntu 5.04)
Network Security Threat Level: High
Networks Security ID:
Vulnerability Assessment Copyright: Ubuntu Security Notice (C) 2005 Canonical, Inc. / NASL script (C) 2005 Michel Arboi
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