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Bug#: 260265
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Status: RESOLVED
Resolution: FIXED
Assigned To: Gentoo Security <security@gentoo.org>
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Reporter: Robert Buchholz <rbu@gentoo.org>
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Description:   Opened: 2009-02-25 16:22 0000 
Quoting http://optipng.sourceforge.net/:
All current OptiPNG versions are known to be vulnerable to memory reallocation
attacks, due to a bug in the GIF image reader. (Many thanks to Roy Tam for the
report, as well as the fix.) 

patch:
http://213.203.218.125/o/op/optipng/optipng-0.6.2.1.diff

------- Comment #1 From Tristan Heaven 2009-02-25 17:31:26 0000 ------- 
Patched in 0.6.2-r1

------- Comment #2 From Robert Buchholz 2009-02-25 17:37:12 0000 ------- 
Arches, please test and mark stable:
=media-gfx/optipng-0.6.2-r1
Target keywords : "alpha amd64 ppc x86"

------- Comment #3 From Markus Meier 2009-02-25 20:11:02 0000 ------- 
amd64/x86 stable

------- Comment #4 From Robert Buchholz 2009-03-03 13:07:50 0000 ------- 
CVE-2009-0749 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-0749):
  Use-after-free vulnerability in the GIFReadNextExtension function in
  lib/pngxtern/gif/gifread.c in OptiPNG 0.6.2 and earlier allows
  context-dependent attackers to cause a denial of service (application
  crash) via a crafted GIF image that causes the realloc function to
  return a new pointer, which triggers memory corruption when the old
  pointer is accessed.

------- Comment #5 From Tobias Scherbaum 2009-03-04 20:23:11 0000 ------- 
ppc stable

------- Comment #6 From Raúl Porcel 2009-03-06 16:27:27 0000 ------- 
alpha stable

------- Comment #7 From Robert Buchholz 2009-03-09 13:07:14 0000 ------- 
GLSA 200903-12
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