Ubuntu Security Notice USN-499-1
16th August, 2007
apache2 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 7.04
- Ubuntu 6.10
- Ubuntu 6.06 LTS
Details
Stefan Esser discovered that mod_status did not force a character set,
which could result in browsers becoming vulnerable to XSS attacks when
processing the output. If a user were tricked into viewing server
status output during a crafted server request, a remote attacker could
exploit this to modify the contents, or steal confidential data (such as
passwords), within the same domain. By default, mod_status is disabled
in Ubuntu. (CVE-2006-5752)
Niklas Edmundsson discovered that the mod_cache module could be made to
crash using a specially crafted request. A remote user could use this
to cause a denial of service if Apache was configured to use a threaded
worker. By default, mod_cache is disabled in Ubuntu. (CVE-2007-1863)
A flaw was discovered in the signal handling of Apache. A local
attacker could trick Apache into sending SIGUSR1 to other processes.
The vulnerable code was only present in Ubuntu Feisty. (CVE-2007-3304)
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 7.04:
- apache2-mpm-worker 2.2.3-3.2ubuntu0.1
- apache2.2-common 2.2.3-3.2ubuntu0.1
- apache2-mpm-prefork 2.2.3-3.2ubuntu0.1
- Ubuntu 6.10:
- apache2-mpm-worker 2.0.55-4ubuntu4.1
- apache2-common 2.0.55-4ubuntu4.1
- apache2-mpm-prefork 2.0.55-4ubuntu4.1
- Ubuntu 6.06 LTS:
- apache2-mpm-worker 2.0.55-4ubuntu2.2
- apache2-common 2.0.55-4ubuntu2.2
- apache2-mpm-prefork 2.0.55-4ubuntu2.2
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system upgrade is sufficient to effect the
necessary changes.