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[USN-3213-1] GD library vulnerabilities

Posted on 28 February 2017
Ubuntu Security

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Ubuntu Security Notice USN-3213-1
February 28, 2017

libgd2 vulnerabilities
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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:

Stefan Esser discovered that the GD library incorrectly handled memory wh=
en
processing certain images. If a user or automated system were tricked int=
o
processing a specially crafted image, an attacker could cause a denial of=

service, or possibly execute arbitrary code. This issue only affected
Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-10166)

It was discovered that the GD library incorrectly handled certain malform=
ed
images. If a user or automated system were tricked into processing a
specially crafted image, an attacker could cause a denial of service.
(CVE-2016-10167)

It was discovered that the GD library incorrectly handled certain malform=
ed
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. (CVE-2016-10168)

Ibrahim El-Sayed discovered that the GD library incorrectly handled certa=
in
malformed TGA images. If a user or automated system were tricked into
processing a specially crafted TGA image, an attacker could cause a denia=
l
of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS a=
nd
Ubuntu 16.10. (CVE-2016-6906)

Ibrahim El-Sayed discovered that the GD library incorrectly handled certa=
in
malformed WebP images. If a user or automated system were tricked into
processing a specially crafted WebP image, an attacker could cause a deni=
al
of service, or possibly execute arbitrary code. This issue only affected
Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-6912)

It was discovered that the GD library incorrectly handled creating
oversized images. If a user or automated system were tricked into creatin=
g
a specially crafted image, an attacker could cause a denial of service.
(CVE-2016-9317)

It was discovered that the GD library incorrectly handled filling certain=

images. If a user or automated system were tricked into filling an image,=

an attacker could cause a denial of service. (CVE-2016-9933)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.10:
libgd3 2.2.1-1ubuntu3.3

Ubuntu 16.04 LTS:
libgd3 2.1.1-4ubuntu0.16.04.6

Ubuntu 14.04 LTS:
libgd3 2.1.0-3ubuntu0.6

Ubuntu 12.04 LTS:
libgd2-noxpm 2.0.36~rc1~dfsg-6ubuntu2.4
libgd2-xpm 2.0.36~rc1~dfsg-6ubuntu2.4

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


References:
http://www.ubuntu.com/usn/usn-3213-1
CVE-2016-10166, CVE-2016-10167, CVE-2016-10168, CVE-2016-6906,
CVE-2016-6912, CVE-2016-9317, CVE-2016-9933

Package Information:
https://launchpad.net/ubuntu/+source/libgd2/2.2.1-1ubuntu3.3
https://launchpad.net/ubuntu/+source/libgd2/2.1.1-4ubuntu0.16.04.6
https://launchpad.net/ubuntu/+source/libgd2/2.1.0-3ubuntu0.6
https://launchpad.net/ubuntu/+source/libgd2/2.0.36~rc1~dfsg-6ubuntu2.4



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