USN-3388-1: Subversion vulnerabilities

Ubuntu Security Notice USN-3388-1

11th August, 2017

subversion vulnerabilities

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

• Ubuntu 17.04
• Ubuntu 16.04 LTS
• Ubuntu 14.04 LTS

Summary

Several security issues were fixed in Subversion.

Software description

• 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 version:

Ubuntu 17.04:

subversion 1.9.5-1ubuntu1.1

libsvn1 1.9.5-1ubuntu1.1

Ubuntu 16.04 LTS:

subversion 1.9.3-2ubuntu1.1

libapache2-svn 1.9.3-2ubuntu1.1

libapache2-mod-svn 1.9.3-2ubuntu1.1

libsvn1 1.9.3-2ubuntu1.1

Ubuntu 14.04 LTS:

subversion 1.8.8-1ubuntu3.3

libapache2-svn 1.8.8-1ubuntu3.3

libapache2-mod-svn 1.8.8-1ubuntu3.3

libsvn1 1.8.8-1ubuntu3.3

To update your system, please follow these instructions: http://ift.tt/17VXqjU.

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

References

CVE-2016-2167, CVE-2016-8734, CVE-2017-9800

from Ubuntu Security Notices http://ift.tt/2vpe3Gw