GMime: Arbitrary code execution

Background

GMime is a C/C++ library which may be used for the creation and parsing of messages using the Multipurpose Internet Mail Extension (MIME).

Description

GMime contains a buffer overflow flaw in the GMIME_UUENCODE_LEN macro in gmime/gmime-encodings.h.

Impact

A context-dependent attacker could possibly execute arbitrary code or cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

GMime 2.4.x users on the PPC64 architecture should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=dev-libs/gmime-2.4.17"

GMime 2.4.x users on other architectures should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=dev-libs/gmime-2.4.15"

GMime 2.2.x users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=dev-libs/gmime-2.2.26"

Packages which depend on this library may need to be recompiled. Tools such as revdep-rebuild may assist in identifying some of these packages.