Ubuntu 12.04 LTS / 14.04 LTS / 15.04 / 15.10 : libpng vulnerabilities (USN-2815-1)

Ubuntu Security Notice (C) 2015-2016 Canonical, Inc. / NASL script (C) 2015-2016 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing a security-related patch.

Description :

Mikulas Patocka discovered that libpng incorrectly handled certain
large fields. If a user or automated system using libpng were tricked
into opening a specially crafted image, an attacker could exploit this
to cause libpng to crash, leading to a denial of service. This issue
only affected Ubuntu 12.04 LTS. (CVE-2012-3425)

Qixue Xiao discovered that libpng incorrectly handled certain time
values. If a user or automated system using libpng were tricked into
opening a specially crafted image, an attacker could exploit this to
cause libpng to crash, leading to a denial of service. (CVE-2015-7981)

It was discovered that libpng incorrectly handled certain small
bit-depth values. If a user or automated system using libpng were
tricked into opening a specially crafted image, an attacker could
exploit this to cause a denial of service or execute code with the
privileges of the user invoking the program. (CVE-2015-8126).

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 libpng12-0 package.

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 5.5
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 86993 ()

Bugtraq ID:

CVE ID: CVE-2012-3425
CVE-2015-7981
CVE-2015-8126

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