Ubuntu 12.04 LTS / 14.04 LTS / 15.04 / 15.10 : libpng vulnerabilities (USN-2861-1)

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


Synopsis :

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

Description :

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-2015-8472)

Qixue Xiao and Chen Yu discovered that libpng incorrectly handled
certain malformed images. 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. (CVE-2015-8540).

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 : 9.3
(CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 6.9
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 87774 ()

Bugtraq ID:

CVE ID: CVE-2015-8472
CVE-2015-8540

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