USN-3309-1: Libtasn1 vulnerability

Ubuntu Security Notice USN-3309-1

5th June, 2017

libtasn1-6 vulnerability

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

• Ubuntu 17.04



• Ubuntu 16.10



• Ubuntu 16.04 LTS



• Ubuntu 14.04 LTS

Summary

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

Software description

• libtasn1-6
  - 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 version:

Ubuntu 17.04:

Ubuntu 16.10:

Ubuntu 16.04 LTS:

Ubuntu 14.04 LTS:

To update your system, please follow these instructions: