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==========================================================================Ubuntu Security Notice USN-2769-1
October 14, 2015

commons-httpclient 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 commons-httpclient.

Software Description:
- commons-httpclient: A Java(TM) library for creating HTTP clients

Details:

It was discovered that Apache Commons HttpClient did not properly verify the
Common Name or subjectAltName fields of X.509 certificates. An attacker could
exploit this to perform a man in the middle attack to view sensitive
information or alter encrypted communications. This issue only affected Ubuntu
12.04 LTS. (CVE-2012-5783)

Florian Weimer discovered the fix for CVE-2012-5783 was incomplete for Apache
Commons HttpClient. An attacker could exploit this to perform a man in the
middle attack to view sensitive information or alter encrypted communications.
This issue only affected Ubuntu 12.04 LTS. (CVE-2012-6153)

Subodh Iyengar and Will Shackleton discovered the fix for CVE-2012-5783 was
incomplete for Apache Commons HttpClient. An attacker could exploit this to
perform a man in the middle attack to view sensitive information or alter
encrypted communications. (CVE-2014-3577)

It was discovered that Apache Commons HttpClient did not properly handle read
timeouts during HTTPS handshakes. A remote attacker could trigger this flaw to
cause a denial of service. (CVE-2015-5262)

Update instructions:

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

Ubuntu 15.04:
  libcommons-httpclient-java      3.1-10.2ubuntu0.15.04.1

Ubuntu 14.04 LTS:
  libcommons-httpclient-java      3.1-10.2ubuntu0.14.04.1

Ubuntu 12.04 LTS:
  libcommons-httpclient-java      3.1-10ubuntu0.1

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

References:
  http://www.ubuntu.com/usn/usn-2769-1
  CVE-2012-5783, CVE-2012-6153, CVE-2014-3577, CVE-2015-5262

Package Information:
  https://launchpad.net/ubuntu/+source/commons-httpclient/3.1-10.2ubuntu0.15.04.1
  https://launchpad.net/ubuntu/+source/commons-httpclient/3.1-10.2ubuntu0.14.04.1
  https://launchpad.net/ubuntu/+source/commons-httpclient/3.1-10ubuntu0.1