gettext: Insecure temporary file handling
Gentoo Linux Security Advisory
||GLSA 200410-10 / gettext
||October 10, 2004
||May 22, 2006: 04
All supported architectures
The gettext utility is vulnerable to symlink attacks, potentially allowing
a local user to overwrite or change permissions on arbitrary files with the
rights of the user running gettext, which could be the root user.
gettext is a set of utilities for the GNU Translation Project which
provides a set of tools and documentation to help produce multi-lingual
messages in programs.
gettext insecurely creates temporary files in world-writeable
directories with predictable names.
A local attacker could create symbolic links in the temporary files
directory, pointing to a valid file somewhere on the filesystem. When
gettext is called, this would result in file access with the rights of
the user running the utility, which could be the root user.
There is no known workaround at this time.
All gettext users should upgrade to the latest version:
Code Listing 3.1: Resolution
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-devel/gettext-0.14.1-r1"