Some functions that implement the locale subsystem on Unix do not properly cleanse user-injected format strings, which allows local attackers to execute arbitrary commands via functions such as gettext and catopen.
https://exchange.xforce.ibmcloud.com/vulnerabilities/5176
http://www.turbolinux.com/pipermail/tl-security-announce/2000-September/000020.html
http://www.redhat.com/support/errata/RHSA-2000-057.html
http://www.novell.com/linux/security/advisories/adv5_draht_glibc_txt.html
http://www.debian.org/security/2000/20000902
http://www.calderasystems.com/support/security/advisories/CSSA-2000-030.0.txt
http://archives.neohapsis.com/archives/tru64/2000-q4/0000.html
http://archives.neohapsis.com/archives/bugtraq/2000-10/0427.html
http://archives.neohapsis.com/archives/bugtraq/2000-08/0436.html