USN-1144-1: Subversion vulnerabilities

Releases

• Ubuntu 11.04
• Ubuntu 10.10
• Ubuntu 10.04

Packages

• subversion - Advanced version control system

Details

Joe Schaefer discovered that the Subversion mod_dav_svn module for Apache
did not properly handle certain baselined WebDAV resource requests. A
remote attacker could use this flaw to cause the service to crash, leading
to a denial of service. (CVE-2011-1752)

Ivan Zhakov discovered that the Subversion mod_dav_svn module for Apache
did not properly handle certain requests. A remote attacker could use this
flaw to cause the service to consume all available resources, leading to a
denial of service. (CVE-2011-1783)

Kamesh Jayachandran discovered that the Subversion mod_dav_svn module for
Apache did not properly handle access control in certain situations. A
remote user could use this flaw to gain access to files that would
otherwise be unreadable. (CVE-2011-1921)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 11.04

• libapache2-svn - 1.6.12dfsg-4ubuntu2.1

Ubuntu 10.10

• libapache2-svn - 1.6.12dfsg-1ubuntu1.3

Ubuntu 10.04

• libapache2-svn - 1.6.6dfsg-2ubuntu1.3

After a standard system update you need to restart any applications that
use Subversion, such as Apache when using mod_dav_svn, to make all the
necessary changes.

References

• CVE-2011-1752
• CVE-2011-1783
• CVE-2011-1921