GLSA-200705-24 : libpng: Denial of Service
Medium Nessus Plugin ID 25383
SynopsisThe remote Gentoo host is missing one or more security-related patches.
DescriptionThe remote host is affected by the vulnerability described in GLSA-200705-24 (libpng: Denial of Service)
Mats Palmgren fixed an error in file pngrutil.c in which the trans array might be not allocated because of images with a bad tRNS chunk CRC value.
A remote attacker could craft an image that when processed or viewed by an application using libpng causes the application to terminate abnormally.
There is no known workaround at this time.
SolutionPlease note that due to separate bugs in libpng 1.2.17, Gentoo does not provide libpng-1.2.17 but libpng-1.2.18. All libpng users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=media-libs/libpng-1.2.18'