FreeBSD : png -- unknown chunk processing uninitialized memory access (57c705d6-12ae-11dd-bab7-0016179b2dd5)

This script is Copyright (C) 2008-2014 Tenable Network Security, Inc.


Synopsis :

The remote FreeBSD host is missing a security-related update.

Description :

Secunia reports :

Tavis Ormandy has reported a vulnerability in libpng, which can be
exploited by malicious people to cause a Denial of Service, disclose
potentially sensitive information, or potentially compromise an
application using the library.

The vulnerability is caused due to the improper handling of PNG chunks
unknown to the library. This can be exploited to trigger the use of
uninitialized memory in e.g. a free() call via unknown PNG chunks
having a length of zero.

Successful exploitation may allow execution of arbitrary code, but
requires that the application calls the png_set_read_user_chunk_fn()
function or the png_set_keep_unknown_chunks() function under specific
conditions.

See also :

http://libpng.sourceforge.net/Advisory-1.2.26.txt
http://www.nessus.org/u?6677c893

Solution :

Update the affected package.

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 6.5
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : false

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 32110 (freebsd_pkg_57c705d612ae11ddbab70016179b2dd5.nasl)

Bugtraq ID: 28770

CVE ID: CVE-2008-1382

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