OSVDB ID: 8312

Title: libpng png_handle_sBIT() Local Overflow

Info

Disclosure
Aug 04, 2004

Discovery
Unknown

Dates

Exploit
Unknown

Solution
Unknown

Description

 A local overflow exists in libpng. The library function png_handle_sBIT relies on checks in other functions to perform input validation resulting in a possible buffer overflow. With a specially crafted PNG file, an attacker might cause execution of code resulting in a loss of integrity.

Classification

 Location: Local Access Required
Attack Type: Input Manipulation
Impact: Loss of Integrity
Exploit: Exploit Unknown
Disclosure: OSVDB Verified

Solution

 Upgrade to version 1.2.6 release candidate 1 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds. Users of the older 1.0 series should upgrade to libpng-1.0.16 release candidate 1 or higher.

Products

PNG Development Group

libpng

 1.2.5
1.0.15

ImageMagick Studio LLC

ImageMagick

 6.0.0-2

GraphicsMagick Group

GraphicsMagick

 1.1.2

Microsoft Corporation

MSN Messenger

 6.1
6.2
5.0

References

Credit
  • Chris Evans - chrisscary.beasts.org -


Direct URL: http://osvdb.org/8312