Texinfo: Insecure temporary file creation
Gentoo Linux Security Advisory
||GLSA 200510-04 / Texinfo
||October 05, 2005
||October 05, 2005: 01
All supported architectures
Texinfo is vulnerable to symlink attacks, potentially allowing a local user
to overwrite arbitrary files.
Texinfo is the official documentation system created by the GNU
Frank Lichtenheld has discovered that the "sort_offline()"
function in texindex insecurely creates temporary files with
A local attacker could create symbolic links in the temporary
files directory, pointing to a valid file somewhere on the filesystem.
When texindex is executed, this would result in the file being
overwritten with the rights of the user running the application.
There is no known workaround at this time.
All Texinfo users should upgrade to the latest version:
Code Listing 3.1: Resolution
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-apps/texinfo-4.8-r1"