[ GLSA 200603-18 ] Pngcrush: Buffer overflow

[GLSA]

Gentoo Linux Security Advisory

Title: Pngcrush: Buffer overflow (GLSA 200603-18)
Severity: normal
Exploitable: remote
Date: March 21, 2006
Bug(s): #123286
ID: 200603-18

Synopsis


Pngcrush is vulnerable to a buffer overflow which could potentially lead to
the execution of arbitrary code.


Background


Pngcrush is an optimizer for PNG files.


Affected Packages

Package: media-gfx/pngcrush
Vulnerable: < 1.6.2
Unaffected: >= 1.6.2
Architectures: All supported architectures


Description


Carsten Lohrke of Gentoo Linux reported that Pngcrush contains a
vulnerable version of zlib (GLSA 200507-19).


Impact


By creating a specially crafted data stream, attackers can
overwrite data structures for applications that use Pngcrush, resulting
in a Denial of Service and potentially arbitrary code execution.


Workaround


There is no known workaround at this time.


Resolution


All Pngcrush users should upgrade to the latest version: