USN-3388-1: Subversion vulnerabilities

Releases

• Ubuntu 17.04
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

Packages

• subversion - Advanced version control system

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)

Update instructions

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

Ubuntu 17.04

• libsvn1 - 1.9.5-1ubuntu1.1
• subversion - 1.9.5-1ubuntu1.1

Ubuntu 16.04

• 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

Ubuntu 14.04

• 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

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

References

• CVE-2016-2167
• CVE-2016-8734
• CVE-2017-9800

Related notices

• USN-3388-2: libsvn1, libapache2-svn, subversion