==========================================================================
Ubuntu Security Notice USN-3309-2
July 18, 2017

libtasn1-3 vulnerability
==========================================================================

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

– Ubuntu 12.04 ESM

Summary:

Libtasn1 could be made to crash or run programs as your login if it
opened a specially crafted file.

Software Description:
– libtasn1-3: Library to manage ASN.1 structures

Details:

Jakub Jirasek discovered that GnuTLS incorrectly handled certain
assignments files. If a user were tricked into processing a specially
crafted assignments file, a remote attacker could possibly execute
arbirary
code.

Update instructions:

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

Ubuntu 12.04 ESM:
  libtasn1-3                      2.10-1ubuntu1.6

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

References:
  https://www.ubuntu.com/usn/usn-3309-2
  https://www.ubuntu.com/usn/usn-3309-1
  CVE-2017-6891
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