Microsoft SQL Server 7.0 and 2000 installs with weak permissions for extended stored procedures that are associated with helper functions, which could allow unprivileged users, and possibly remote attackers, to run stored procedures with administrator privileges via (1) xp_execresultset, (2) xp_printstatements, or (3) xp_displayparamstmt.
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2002/ms02-043
http://www.ngssoftware.com/advisories/mssql-esppu.txt
http://www.kb.cert.org/vuls/id/939675
http://www.kb.cert.org/vuls/id/818939
http://www.kb.cert.org/vuls/id/399531
http://marc.info/?l=ntbugtraq&m=102950792606475&w=2
http://marc.info/?l=bugtraq&m=102950473002959&w=2
http://archives.neohapsis.com/archives/ntbugtraq/2002-q3/0087.html