Bug 384247 – =media-libs/libpng-1.5.4 "png_handle_cHRM()" Division By Zero DoS (CVE-2011-3328)

• Status: RESOLVED FIXED
• Product: Gentoo Security

[Description Agostino Sarubbo 2011-09-23 21:13:41 UTC]

Form secunia security advisory at $URL:

Description:
The vulnerability is caused due to a division by zero within the "png_handle_cHRM()" function (libpng/pngrutil.c) when processing certain cHRM chunks and can be exploited to cause a crash via specially crafted PNG files.

The vulnerability is reported in version 1.5.4. Prior versions are not affected.

Solution
Update to version 1.5.5.

[Comment 1 SpanKY 2011-09-24 05:47:35 UTC]

libpng-1.5.5 is in the tree now

[Comment 2 Samuli Suominen (RETIRED) 2011-09-24 05:51:08 UTC]

(In reply to comment #1)
> libpng-1.5.5 is in the tree now

1.5.4-r1 was committed yesterday for this CVE (told xarthisius to do that on Freenode) so we have been good since yesterday

Thanks for 1.5.5 in any case :-)

[Comment 3 Agostino Sarubbo 2011-09-24 08:20:59 UTC]

Thanks ssuominen, vapier, xarthisius.

As per ~3 closing as noglsa.

[Comment 4 GLSAMaker/CVETool Bot 2012-02-21 03:55:34 UTC]

CVE-2011-3328 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3328):
  The png_handle_cHRM function in pngrutil.c in libpng 1.5.4, when
  color-correction support is enabled, allows remote attackers to cause a
  denial of service (divide-by-zero error and application crash) via a
  malformed PNG image containing a cHRM chunk associated with a certain zero
  value.