RHEL 4 : libpng (RHSA-2011:1103)
Medium Nessus Plugin ID 55725
SynopsisThe remote Red Hat host is missing one or more security updates.
DescriptionUpdated libpng and libpng10 packages that fix one security issue are now available for Red Hat Enterprise Linux 4.
The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.
The libpng packages contain a library of functions for creating and manipulating PNG (Portable Network Graphics) image format files.
An uninitialized memory read issue was found in the way libpng processed certain PNG images that use the Physical Scale (sCAL) extension. An attacker could create a specially crafted PNG image that, when opened, could cause an application using libpng to crash.
Users of libpng and libpng10 should upgrade to these updated packages, which contain a backported patch to correct this issue. All running applications using libpng or libpng10 must be restarted for the update to take effect.
SolutionUpdate the affected packages.