1. Ubuntu Security Notices
  2. USN-3388-1

USN-3388-1: Subversion vulnerabilities

Publication date

11 August 2017

Overview

Several security issues were fixed in Subversion.

Releases

Packages

Details

Joern Schneeweisz discovered that Subversion did not properly handle
host names in ‘svn+ssh://’ URLs. A remote attacker could use this
to construct a subversion repository that when accessed could run
arbitrary code with the privileges of the user. (CVE-2017-9800)

Daniel Shahaf and James McCoy discovered that Subversion did not
properly verify realms when using Cyrus SASL authentication. A
remote attacker could use this to possibly bypass intended access
restrictions. This issue only affected Ubuntu 14.04 LTS and Ubuntu
16.04 LTS. (CVE-2016-2167)

Florian Weimer discovered that Subversion clients did not properly
restrict XML entity expansion when accessing http(s):// URLs. A remote
attacker could use this to cause a denial of service. This issue only
affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-8734)

Joern Schneeweisz discovered that Subversion did not properly handle
host names in ‘svn+ssh://’ URLs. A remote attacker could use this
to construct a subversion repository that when accessed could run
arbitrary code with the privileges of the user. (CVE-2017-9800)

Daniel Shahaf and James McCoy discovered that Subversion did not
properly verify realms when using Cyrus SASL authentication. A
remote attacker could use this to possibly bypass intended access
restrictions. This issue only affected Ubuntu 14.04 LTS and Ubuntu
16.04 LTS. (CVE-2016-2167)

Florian Weimer discovered that Subversion clients did not properly
restrict XML entity expansion when accessing http(s):// URLs. A remote
attacker could use this to cause a denial of service. This issue only
affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-8734)

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
17.04 zesty libsvn1 –  1.9.5-1ubuntu1.1
subversion –  1.9.5-1ubuntu1.1
16.04 xenial libapache2-mod-svn –  1.9.3-2ubuntu1.1
libapache2-svn –  1.9.3-2ubuntu1.1
libsvn1 –  1.9.3-2ubuntu1.1
subversion –  1.9.3-2ubuntu1.1
14.04 trusty libapache2-mod-svn –  1.8.8-1ubuntu3.3
libapache2-svn –  1.8.8-1ubuntu3.3
libsvn1 –  1.8.8-1ubuntu3.3
subversion –  1.8.8-1ubuntu3.3

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

Have additional questions?

Talk to a member of the team ›