USN-3117-1: GD library vulnerabilities

Ubuntu Security Notice USN-3117-1

1st November, 2016

libgd2 vulnerabilities

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

• Ubuntu 16.10



• Ubuntu 16.04 LTS



• Ubuntu 14.04 LTS



• Ubuntu 12.04 LTS

Summary

The GD library could be made to crash or run programs if it processed a
specially crafted image file.

Software description

• libgd2
  - GD Graphics Library
  
  

Details

Ibrahim El-Sayed discovered that the GD library incorrectly handled certain
malformed Tiff images. If a user or automated system were tricked into
processing a specially crafted Tiff image, an attacker could cause a denial
of service. ()

Emmanuel Law discovered that the GD library incorrectly handled certain
strings when creating images. If a user or automated system were tricked
into processing a specially crafted image, an attacker could cause a denial
of service, or possibly execute arbitrary code. (









.

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

References

,

CVE-2016-8670