[OpenPKG-SA-2007.013] OpenPKG Security Advisory (png)



-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

____________________________________________________________________________

Publisher Name: OpenPKG GmbH
Publisher Home: http://openpkg.com/

Advisory Id (public): OpenPKG-SA-2007.013
Advisory Type: OpenPKG Security Advisory (SA)
Advisory Directory: http://openpkg.com/go/OpenPKG-SA
Advisory Document: http://openpkg.com/go/OpenPKG-SA-2007.013
Advisory Published: 2007-05-17 22:31 UTC

Issue Id (internal): OpenPKG-SI-20070517.02
Issue First Created: 2007-05-17
Issue Last Modified: 2007-05-17
Issue Revision: 03
____________________________________________________________________________

Subject Name: png
Subject Summary: Portable Network Graphics (PNG) Image Format
Library
Subject Home: http://www.libpng.org/pub/png/libpng.html
Subject Versions: * <= 1.2.16

Vulnerability Id: CVE-2007-2445
Vulnerability Scope: global (not OpenPKG specific)

Attack Feasibility: run-time
Attack Vector: remote network
Attack Impact: denial of service

Description:
As confirmed by the vendor, a Denial of Service (DoS) vulnerability
exists in the PNG [0] image format library libpng [1]. The bug is
a NULL-pointer-dereference vulnerability involving palette images
with a malformed "tRNS" PNG chunk, i.e., one with a bad CRC value.
This bug can, at a minimum, cause crashes in applications simply by
displaying a malformed image.

References:
[0] http://www.libpng.org/pub/png/
[1] http://www.libpng.org/pub/png/libpng.html
[2] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2445
____________________________________________________________________________

Primary Package Name: png
Primary Package Home: http://openpkg.org/go/package/png

Corrected Distribution: Corrected Branch: Corrected Package:
OpenPKG Enterprise E1.0-SOLID ghostscript-8.54-E1.0.1
OpenPKG Enterprise E1.0-SOLID png-1.2.12-E1.0.2
OpenPKG Community CURRENT ghostscript-8.57-20070516
OpenPKG Community CURRENT png-1.2.18-20070516
____________________________________________________________________________

For security reasons, this document was digitally signed with the
OpenPGP public key of the OpenPKG GmbH (public key id 61B7AE34)
which you can download from http://openpkg.com/openpkg.com.pgp
or retrieve from the OpenPGP keyserver at hkp://pgp.openpkg.org/.
Follow the instructions at http://openpkg.com/security/signatures/
for more details on how to verify the integrity of this document.
____________________________________________________________________________

-----BEGIN PGP SIGNATURE-----
Comment: OpenPKG GmbH <http://openpkg.com/>

iD8DBQFGTLumZwQuyWG3rjQRAkgtAJ9n08tUFor5QknrN1TNjkjzffsn/gCeKaiM
mw6YHBge6LLBrfQTd2pX2+g=
=lYyA
-----END PGP SIGNATURE-----



Relevant Pages