mtink: Insecure tempfile handling
Gentoo Linux Security Advisory
||GLSA 200411-17 / mtink
||November 09, 2004
||May 22, 2006: 02
All supported architectures
mtink is vulnerable to symlink attacks, potentially allowing a local user
to overwrite arbitrary files with the rights of the user running the
mtink is a status monitor and inkjet cartridge changer for some Epson
Tavis Ormandy from Gentoo Linux discovered that mtink uses insecure
permissions on temporary files.
A local attacker could create symbolic links in the temporary files
directory, pointing to a valid file somewhere on the filesystem. When
mtink is executed, this would result in the file being overwritten with
the rights of the user running the utility, which could be the root
There is no known workaround at this time.
All mtink users should upgrade to the latest version:
Code Listing 3.1: Resolution
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-print/mtink-1.0.5"