Joined: 12 May 2004
|Posted: Tue Mar 21, 2006 2:26 pm Post subject: [ GLSA 200603-18 ] Pngcrush: Buffer overflow
|Gentoo Linux Security Advisory
Title: Pngcrush: Buffer overflow (GLSA 200603-18)
Date: March 21, 2006
Pngcrush is vulnerable to a buffer overflow which could potentially lead to the execution of arbitrary code.
Pngcrush is an optimizer for PNG files.
Vulnerable: < 1.6.2
Unaffected: >= 1.6.2
Architectures: All supported architectures
Carsten Lohrke of Gentoo Linux reported that Pngcrush contains a vulnerable version of zlib (GLSA 200507-19).
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.
There is no known workaround at this time.
All Pngcrush users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=media-gfx/pngcrush-1.6.2"
Last edited by GLSA on Sun May 07, 2006 5:00 pm; edited 1 time in total