MySQL 3.23.55 and earlier creates world-writeable files and allows mysql users to gain root privileges by using the "SELECT * INFO OUTFILE" operator to overwrite a configuration file and cause mysql to run as root upon restart, as demonstrated by modifying my.cnf.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A442
https://exchange.xforce.ibmcloud.com/vulnerabilities/11510
http://www.redhat.com/support/errata/RHSA-2003-093.html
http://www.mandriva.com/security/advisories?name=MDKSA-2003:057
http://www.linuxsecurity.com/advisories/engarde_advisory-3046.html
http://www.kb.cert.org/vuls/id/203897
http://www.debian.org/security/2003/dsa-303
http://rhn.redhat.com/errata/RHSA-2003-094.html
http://marc.info/?l=bugtraq&m=104802285012750&w=2
http://marc.info/?l=bugtraq&m=104800948128630&w=2
http://marc.info/?l=bugtraq&m=104739810523433&w=2
http://marc.info/?l=bugtraq&m=104715840202315&w=2
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000743