USN-3309-2: Libtasn1 vulnerability

USN-3309-2: Libtasn1 vulnerability

Ubuntu Security Notice USN-3309-2

18th July, 2017

libtasn1-3 vulnerability

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

  • Ubuntu 12.04 LTS

Summary

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

Software description

  • libtasn1-3
    – 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 version:

Ubuntu 12.04 LTS:
libtasn1-3

2.10-1ubuntu1.6

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

Source: USN-3309-2: Libtasn1 vulnerability

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