all things security

Gentoo Linux Security Advisory 201701-74

Gentoo Linux Security Advisory 201701-74
Posted Jan 30, 2017
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201701-74 - A null pointer dereference in libpng might allow remote attackers to execute arbitrary code. Versions less than 1.6.27 are affected.

tags | advisory, remote, arbitrary
systems | linux, gentoo
advisories | CVE-2016-10087
MD5 | a85b80baa11ef709e0e55956d30dcc3a

Gentoo Linux Security Advisory 201701-74

Change Mirror Download

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 201701-74
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Severity: Normal
Title: libpng: Remote execution of arbitrary code
Date: January 29, 2017
Bugs: #604082
ID: 201701-74

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
========

A null pointer dereference in libpng might allow remote attackers to
execute arbitrary code.

Background
==========

libpng is a standard library used to process PNG (Portable Network
Graphics) images. It is used by several programs, including web
browsers and potentially server processes.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-libs/libpng < 1.6.27 >= 1.6.27
>= 1.5.28
>= 1.2.57

Description
===========

A null pointer dereference was discovered in libpng in the
png_push_save_buffer function. In order to be vulnerable, an
application has to load a text chunk into the PNG structure, then
delete all text, then add another text chunk to the same PNG structure,
which seems to be an unlikely sequence, but it is possible.

Impact
======

A remote attacker, by enticing a user to process a specially crafted
PNG file, could execute arbitrary code with the privileges of the
process.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All libpng 1.6.x users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libpng-1.6.27"

All libpng 1.5.x users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libpng-1.5.28:1.5"

All libpng 1.2.x users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libpng-1.2.57:1.2"

References
==========

[ 1 ] CVE-2016-10087
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-10087

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

https://security.gentoo.org/glsa/201701-74

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2017 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5


--ettmH7KvJnSPRH7XA1DOIij9vFHbDP4Lw--

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

October 2017

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Oct 1st
    15 Files
  • 2
    Oct 2nd
    16 Files
  • 3
    Oct 3rd
    15 Files
  • 4
    Oct 4th
    15 Files
  • 5
    Oct 5th
    11 Files
  • 6
    Oct 6th
    6 Files
  • 7
    Oct 7th
    2 Files
  • 8
    Oct 8th
    1 Files
  • 9
    Oct 9th
    13 Files
  • 10
    Oct 10th
    16 Files
  • 11
    Oct 11th
    15 Files
  • 12
    Oct 12th
    23 Files
  • 13
    Oct 13th
    13 Files
  • 14
    Oct 14th
    12 Files
  • 15
    Oct 15th
    2 Files
  • 16
    Oct 16th
    16 Files
  • 17
    Oct 17th
    16 Files
  • 18
    Oct 18th
    14 Files
  • 19
    Oct 19th
    8 Files
  • 20
    Oct 20th
    7 Files
  • 21
    Oct 21st
    0 Files
  • 22
    Oct 22nd
    0 Files
  • 23
    Oct 23rd
    0 Files
  • 24
    Oct 24th
    0 Files
  • 25
    Oct 25th
    0 Files
  • 26
    Oct 26th
    0 Files
  • 27
    Oct 27th
    0 Files
  • 28
    Oct 28th
    0 Files
  • 29
    Oct 29th
    0 Files
  • 30
    Oct 30th
    0 Files
  • 31
    Oct 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2016 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close