Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS / 16.10 : libgd2 vulnerabilities (USN-3117-1)

Ubuntu Security Notice (C) 2016 Canonical, Inc. / NASL script (C) 2016 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing one or more security-related
patches.

Description :

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. (CVE-2016-6911)

Ke Liu discovered that the GD library incorrectly handled certain
integers when processing WebP images. If a user or automated system
were tricked into processing a specially crafted WebP image, an
attacker could cause a denial of service, or possibly execute
arbitrary code. This issue only applied to Ubuntu 14.04 LTS, Ubuntu
16.04 LTS and Ubuntu 16.10. (CVE-2016-7568)

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.
(CVE-2016-8670).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

Solution :

Update the affected libgd2-noxpm, libgd2-xpm and / or libgd3 packages.

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 5.9
(CVSS2#E:POC/RL:OF/RC:ND)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 94466 ()

Bugtraq ID:

CVE ID: CVE-2016-6911
CVE-2016-7568
CVE-2016-8670

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