[USN-1893-1] Subversion vulnerabilities

[Marc Deslauriers]

==========================================================================
Ubuntu Security Notice USN-1893-1
June 27, 2013

subversion vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in Subversion.

Software Description:
- subversion: Advanced version control system

Details:

Alexander Klink discovered that the Subversion mod_dav_svn module for
Apache did not properly handle a large number of properties. A remote
authenticated attacker could use this flaw to cause memory consumption,
leading to a denial of service. (CVE-2013-1845)

Ben Reser discovered that the Subversion mod_dav_svn module for
Apache did not properly handle certain LOCKs. A remote authenticated
attacker could use this flaw to cause Subversion to crash, leading to a
denial of service. (CVE-2013-1846)

Philip Martin and Ben Reser discovered that the Subversion mod_dav_svn
module for Apache did not properly handle certain LOCKs. A remote
attacker could use this flaw to cause Subversion to crash, leading to a
denial of service. (CVE-2013-1847)

It was discovered that the Subversion mod_dav_svn module for Apache did not
properly handle certain PROPFIND requests. A remote attacker could use this
flaw to cause Subversion to crash, leading to a denial of service.
(CVE-2013-1849)

Greg McMullin, Stefan Fuhrmann, Philip Martin, and Ben Reser discovered
that the Subversion mod_dav_svn module for Apache did not properly handle
certain log REPORT requests. A remote attacker could use this flaw to cause
Subversion to crash, leading to a denial of service. This issue only
affected Ubuntu 12.10 and Ubuntu 13.04. (CVE-2013-1884)

Stefan Sperling discovered that Subversion incorrectly handled newline
characters in filenames. A remote authenticated attacker could use this
flaw to corrupt FSFS repositories. (CVE-2013-1968)

Boris Lytochkin discovered that Subversion incorrectly handled TCP
connections that were closed early. A remote attacker could use this flaw
to cause Subversion to crash, leading to a denial of service.
(CVE-2013-2112)

Update instructions:

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

Ubuntu 13.04:
  libapache2-svn                  1.7.5-1ubuntu3.1
  libsvn1                         1.7.5-1ubuntu3.1

Ubuntu 12.10:
  libapache2-svn                  1.7.5-1ubuntu2.1
  libsvn1                         1.7.5-1ubuntu2.1

Ubuntu 12.04 LTS:
  libapache2-svn                  1.6.17dfsg-3ubuntu3.3
  libsvn1                         1.6.17dfsg-3ubuntu3.3

In general, a standard system update will make all the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-1893-1
  CVE-2013-1845, CVE-2013-1846, CVE-2013-1847, CVE-2013-1849,
  CVE-2013-1884, CVE-2013-1968, CVE-2013-2112

Package Information:
  https://launchpad.net/ubuntu/+source/subversion/1.7.5-1ubuntu3.1
  https://launchpad.net/ubuntu/+source/subversion/1.7.5-1ubuntu2.1
  https://launchpad.net/ubuntu/+source/subversion/1.6.17dfsg-3ubuntu3.3


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