Buffer overflow in Apache 2.0.50 and earlier allows local users to gain apache privileges via a .htaccess file that causes the overflow during expansion of environment variables.
https://exchange.xforce.ibmcloud.com/vulnerabilities/17384
http://www.trustix.org/errata/2004/0047/
http://www.redhat.com/support/errata/RHSA-2004-463.html
http://www.novell.com/linux/security/advisories/2004_32_apache2.html
http://www.mandrakesecure.net/en/advisories/advisory.php?name=MDKSA-2004:096
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11561
https://euvd.enisa.europa.eu/vulnerability/EUVD-2004-0745
http://www.vupen.com/english/advisories/2009/1233
http://support.ca.com/irj/portal/anonymous/phpsupcontent?contentID=205147
http://securitytracker.com/id?1011303