LibYAML: Arbitrary code execution
Gentoo Linux Security Advisory
||GLSA 201405-27 / libyaml
||May 23, 2014
||May 23, 2014: 1
All supported architectures
A vulnerability in LibYAML could allow an attacker to execute
arbitrary code or cause a Denial of Service condition.
LibYAML is a YAML 1.1 parser and emitter written in C.
The yaml_parser_scan_uri_escapes() function does not properly expand
strings passed as input, which can result in a heap-based buffer
An attacker could provide a specially-crafted YAML document, which, when
parsed by LibYAML, could result in arbitrary code execution or cause the
application to crash.
There is no known workaround at this time.
All LibYAML users should upgrade to the latest version:
Code Listing 3.1: Resolution
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libyaml-0.1.6"
Packages which depend on this library may need to be recompiled. Tools
such as revdep-rebuild may assist in identifying these packages.