GLSA-200607-06 : libpng: Buffer overflow
High Nessus Plugin ID 22080
SynopsisThe remote Gentoo host is missing one or more security-related patches.
DescriptionThe remote host is affected by the vulnerability described in GLSA-200607-06 (libpng: Buffer overflow)
In pngrutil.c, the function png_decompress_chunk() allocates insufficient space for an error message, potentially overwriting stack data, leading to a buffer overflow.
By enticing a user to load a maliciously crafted PNG image, an attacker could execute arbitrary code with the rights of the user, or crash the application using the libpng library, such as the emul-linux-x86-baselibs.
There is no known workaround at this time.
SolutionAll libpng users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=media-libs/libpng-1.2.12' All AMD64 emul-linux-x86-baselibs users should also upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=app-emulation/emul-linux-x86-baselibs-2.5.1'