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Arrow  Topic :

flac123 0.0.9 - Stack overflow in comment parsing


Arrow  SecurityAlert : 2854
Arrow  CVE : CVE-2007-3507
Arrow  SecurityRisk : High  Security Risk High  (About)
Arrow  Remote Exploit : Yes
Arrow  Local Exploit : No
Arrow  Exploit Available : No
Arrow  Credit : David Thiel
Arrow  Published : 04.07.2007

Arrow  Affected Software : flac123 0.0.9



Arrow  Advisory Content :  

iSEC Partners Security Advisory - 2007-002-flactools
http://www.isecpartners.com
--------------------------------------------

flac123 0.0.9 - Stack overflow in comment parsing

Vendor URL: http://flac-tools.sourceforge.net/
Severity: High (Allows for arbitrary code execution)
Author: David Thiel <david[at]isecpartners[dot]com>

Vendor notified: 2007-06-05
Public release: 2007-06-28
Systems affected: Verified code execution on FreeBSD 6.2 - should affect
most
systems.
Advisory URL:
http://www.isecpartners.com/advisories/2007-002-flactools.txt

Summary:
--------
flac123, also known as flac-tools, is vulnerable to a buffer overflow in
vorbis comment parsing. This allows for the execution of arbitrary code.

Details:
--------
The function local__vcentry_parse_value() in vorbiscomment.c does not
correctly handle a long value_length, causing it to overflow the buffer
"dest" during memcpy().

Fix Information:
----------------
This is the sole issue corrected in version 0.0.10.

Thanks to:
----------
Dan Johnson for quickly producing the fixed version.

About iSEC Partners:
--------------------
iSEC Partners is a full-service security consulting firm that provides
penetration testing, secure systems development, security education
and software design verification.

More information on exploiting media players and codecs and tools to do
the same will be presented at BlackHat USA 2007.

115 Sansome Street, Suite 1005
San Francisco, CA 94104
Phone: (415) 217-0052





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