Mandriva Linux Security Advisory : libpng (MDVSA-2011:151)

Medium Nessus Plugin ID 56529


The remote Mandriva Linux host is missing one or more security updates.


Multiple vulnerabilities has been discovered and corrected in libpng :

The png_format_buffer function in pngerror.c in libpng allows remote attackers to cause a denial of service (application crash) via a crafted PNG image that triggers an out-of-bounds read during the copying of error-message data. NOTE: this vulnerability exists because of a CVE-2004-0421 regression (CVE-2011-2501).

Buffer overflow in libpng, when used by an application that calls the png_rgb_to_gray function but not the png_set_expand function, allows remote attackers to overwrite memory with an arbitrary amount of data, and possibly have unspecified other impact, via a crafted PNG image (CVE-2011-2690).

The png_err function in pngerror.c in libpng makes a function call using a NULL pointer argument instead of an empty-string argument, which allows remote attackers to cause a denial of service (application crash) via a crafted PNG image (CVE-2011-2691). NOTE:
This does not affect the binary packages in Mandriva, but could affect users if PNG_NO_ERROR_TEXT is defined using the libpng-source-1.?.?? package.

The png_handle_sCAL function in pngrutil.c in libpng does not properly handle invalid sCAL chunks, which allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact via a crafted PNG image that triggers the reading of uninitialized memory (CVE-2011-2692).

The updated packages have been patched to correct these issues.


Update the affected packages.

Plugin Details

Severity: Medium

ID: 56529

File Name: mandriva_MDVSA-2011-151.nasl

Version: $Revision: 1.6 $

Type: local

Published: 2011/10/18

Modified: 2016/05/17

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 6.8

Temporal Score: 5.9

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

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

Vulnerability Information

CPE: p-cpe:/a:mandriva:linux:lib64png-devel, p-cpe:/a:mandriva:linux:lib64png-static-devel, p-cpe:/a:mandriva:linux:lib64png3, p-cpe:/a:mandriva:linux:libpng-devel, p-cpe:/a:mandriva:linux:libpng-source, p-cpe:/a:mandriva:linux:libpng-static-devel, p-cpe:/a:mandriva:linux:libpng3, cpe:/o:mandriva:linux:2010.1

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/Mandrake/release, Host/Mandrake/rpm-list

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2011/10/17

Reference Information

CVE: CVE-2011-2501, CVE-2011-2690, CVE-2011-2691, CVE-2011-2692

BID: 48474, 48618, 48660

MDVSA: 2011:151