USN-2721-1: Subversion vulnerabilities

20 August 2015

subversion vulnerabilities

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

  • Ubuntu 15.04
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS

Summary

Several security issues were fixed in Subversion.

Software Description

  • subversion - Advanced version control system

Details

It was discovered that the Subversion mod_dav_svn module incorrectly handled REPORT requests for a resource that does not exist. A remote attacker could use this issue to cause the server to crash, resulting in a denial of service. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2014-3580)

It was discovered that the Subversion mod_dav_svn module incorrectly handled requests requiring a lookup for a virtual transaction name that does not exist. A remote attacker could use this issue to cause the server to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2014-8108)

Evgeny Kotkov discovered that the Subversion mod_dav_svn module incorrectly handled large numbers of REPORT requests. A remote attacker could use this issue to cause the server to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 15.04. (CVE-2015-0202)

Evgeny Kotkov discovered that the Subversion mod_dav_svn and svnserve modules incorrectly certain crafted parameter combinations. A remote attacker could use this issue to cause the server to crash, resulting in a denial of service. (CVE-2015-0248)

Ivan Zhakov discovered that the Subversion mod_dav_svn module incorrectly handled crafted v1 HTTP protocol request sequences. A remote attacker could use this issue to spoof the svn:author property. (CVE-2015-0251)

C. Michael Pilato discovered that the Subversion mod_dav_svn module incorrectly restricted anonymous access. A remote attacker could use this issue to read hidden files via the path name. This issue only affected Ubuntu 14.04 LTS and Ubuntu 15.04. (CVE-2015-3184)

C. Michael Pilato discovered that Subversion incorrectly handled path-based authorization. A remote attacker could use this issue to obtain sensitive path information. (CVE-2015-3187)

Update instructions

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

Ubuntu 15.04
libapache2-svn - 1.8.10-5ubuntu1.1
libsvn1 - 1.8.10-5ubuntu1.1
subversion - 1.8.10-5ubuntu1.1
Ubuntu 14.04 LTS
libapache2-svn - 1.8.8-1ubuntu3.2
libsvn1 - 1.8.8-1ubuntu3.2
subversion - 1.8.8-1ubuntu3.2
Ubuntu 12.04 LTS
libapache2-svn - 1.6.17dfsg-3ubuntu3.5
libsvn1 - 1.6.17dfsg-3ubuntu3.5
subversion - 1.6.17dfsg-3ubuntu3.5

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References