drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Pufferüberlauf in libpng
Name: |
Pufferüberlauf in libpng |
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ID: |
201502-10 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
So, 15. Februar 2015, 22:44 |
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Referenzen: |
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-9495
http://www.libpng.org/pub/png/src/libpng-1.6.15-README.txt |
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Applikationen: |
libpng |
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Originalnachricht |
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --RKC09LnvuNoLlIkPA6ft9cshuj3BTsnbU Content-Type: text/plain; charset=utf- Content-Transfer-Encoding: quoted-printable
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201502-10 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: libpng: User-assisted execution of arbitrary code Date: February 15, 2015 Bugs: #531264, #533358 ID: 201502-10
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Synopsis ========
Two vulnerabilities have been found in libpng, possibly resulting in execution of 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 < 1.6.16 >= 1.6.16 *>= 1.5.21 *>= 1.2.52
Description ===========
Two vulnerabilities have been discovered in libpng:
* The png_user_version_check function contains an out-of-bounds memory access error (libpng 1.6.15 Release Notes) * The png_combine_row function contains an integer overflow error, which could result in a heap-based buffer overflow (CVE-2014-9495)
Impact ======
A context-dependent attacker could entice a user to open a specially crafted PNG file using an application linked against libpng, possibly resulting in execution of arbitrary code.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All libpng 1.6 users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=media-libs/libpng-1.6.16"
All libpng 1.5 users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=media-libs/libpng-1.5.21"
References ==========
[ 1 ] CVE-2014-9495 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-9495 [ 2 ] libpng 1.6.15 Release Notes http://www.libpng.org/pub/png/src/libpng-1.6.15-README.txt
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-201502-10.xml
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 2015 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
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