The remote host is missing an update to the system as announced in the referenced advisory.

Update your system with the appropriate patches or software upgrades. http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=120508 http://rhn.redhat.com/errata/RHSA-2004-181.html http://secunia.com/advisories/11505 http://www.osvdb.org/5726 http://www.vuxml.org/freebsd/3a408f6f-9c52-11d8-9366-0020ed76ef5a.html

The following packages are affected: linux-png png CVE-2004-0421 The Portable Network Graphics library (libpng) 1.0.15 and earlier allows attackers to cause a denial of service (crash) via a malformed PNG image file that triggers an error that causes an out-of-bounds read when creating the error message.