Pngcrush: Buffer overflow

Pngcrush: Buffer overflow Pngcrush is vulnerable to a buffer overflow which could potentially lead to the execution of arbitrary code. pngcrush March 21, 2006 March 21, 2006: 01 123286 remote 1.6.2 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"

GLSA 200507-19 CVE-2005-1849 koon koon adir