GLSA-200903-28 : libpng: Multiple vulnerabilities

High Nessus Plugin ID 35929


The remote Gentoo host is missing one or more security-related patches.


The remote host is affected by the vulnerability described in GLSA-200903-28 (libpng: Multiple vulnerabilities)

Multiple vulnerabilities were discovered in libpng:
A memory leak bug was reported in png_handle_tEXt(), a function that is used while reading PNG images (CVE-2008-6218).
A memory overwrite bug was reported by Jon Foster in png_check_keyword(), caused by writing overlong keywords to a PNG file (CVE-2008-5907).
A memory corruption issue, caused by an incorrect handling of an out of memory condition has been reported by Tavis Ormandy of the Google Security Team. That vulnerability affects direct uses of png_read_png(), pCAL chunk and 16-bit gamma table handling (CVE-2009-0040).
Impact :

A remote attacker may execute arbitrary code with the privileges of the user opening a specially crafted PNG file by exploiting the erroneous out-of-memory handling. An attacker may also exploit the png_check_keyword() error to set arbitrary memory locations to 0, if the application allows overlong, user-controlled keywords when writing PNG files. The png_handle_tEXT() vulnerability may be exploited by an attacker to potentially consume all memory on a users system when a specially crafted PNG file is opened.
Workaround :

There is no known workaround at this time.


All libpng users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=media-libs/libpng-1.2.35'

See Also

Plugin Details

Severity: High

ID: 35929

File Name: gentoo_GLSA-200903-28.nasl

Version: $Revision: 1.14 $

Type: local

Published: 2009/03/16

Modified: 2016/11/11

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.1

Temporal Score: 6.2

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:libpng, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2009/03/15

Reference Information

CVE: CVE-2008-5907, CVE-2008-6218, CVE-2009-0040

BID: 31920, 33827

OSVDB: 49374, 53314, 53315, 53316, 53317

GLSA: 200903-28

CWE: 94, 399