Synopsis
The remote Gentoo host is missing one or more security-related patches.
Description
The 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.
Impact :
A remote attacker could craft an image that when processed or viewed by an application using libpng causes the application to terminate abnormally.
Workaround :
There is no known workaround at this time.
Solution
Please 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'