Ubuntu Security Update USN-3309-1: Libtasn1 vulnerability

[LinuxBot]

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:
libtasn1-6 4.10-1ubuntu0.1
Ubuntu 16.10:
libtasn1-6 4.9-4ubuntu0.1
Ubuntu 16.04 LTS:
libtasn1-6 4.7-3ubuntu0.16.04.2
Ubuntu 14.04 LTS:
libtasn1-6 3.4-3ubuntu0.5

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References


CVE-2017-6891

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