Ubuntu Security Notice USN-2987-1
31st May, 2016
libgd2 vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 16.04 LTS
- Ubuntu 15.10
- 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
It was discovered that the GD library incorrectly handled certain color
tables in XPM images. If a user or automated system were tricked into
processing a specially crafted XPM image, an attacker could cause a denial
of service. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS.
(CVE-2014-2497)
It was discovered that the GD library incorrectly handled certain malformed
GIF images. If a user or automated system were tricked into processing a
specially crafted GIF image, an attacker could cause a denial of service.
This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS.
(CVE-2014-9709)
It was discovered that the GD library incorrectly handled memory when using
gdImageFillToBorder(). A remote attacker could possibly use this issue to
cause a denial of service. (CVE-2015-8874)
It was discovered that the GD library incorrectly handled memory when using
gdImageScaleTwoPass(). A remote attacker could possibly use this issue to
cause a denial of service. This issue only applied to Ubuntu 14.04 LTS,
Ubuntu 15.10 and Ubuntu 16.04 LTS. (CVE-2015-8877)
Hans Jerry Illikainen discovered that the GD library incorrectly handled
certain malformed GD images. If a user or automated system were tricked
into processing a specially crafted GD image, an attacker could cause a
denial of service or possibly execute arbitrary code. (CVE-2016-3074)
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 16.04 LTS:
-
libgd3
2.1.1-4ubuntu0.16.04.1
- Ubuntu 15.10:
-
libgd3
2.1.1-4ubuntu0.15.10.1
- Ubuntu 14.04 LTS:
-
libgd3
2.1.0-3ubuntu0.1
- Ubuntu 12.04 LTS:
-
libgd2-xpm
2.0.36~rc1~dfsg-6ubuntu2.1
-
libgd2-noxpm
2.0.36~rc1~dfsg-6ubuntu2.1
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.