Pngcrush is vulnerable to a buffer overflow which could potentially lead to the execution of arbitrary code.
|Package||media-gfx/pngcrush on all architectures|
|Affected versions||< 1.6.2|
|Unaffected versions||>= 1.6.2|
Pngcrush is an optimizer for PNG files.
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"
March 21, 2006
March 21, 2006: 01