The RPCSS service in Microsoft Windows XP SP2 and SP3 and Server 2003 SP1 and SP2 does not properly implement isolation among a set of distinct processes that (1) all run under the NetworkService account or (2) all run under the LocalService account, which allows local users to gain privileges by accessing the resources of one of the processes, aka "Windows RPCSS Service Isolation Vulnerability."

References

• https://nvd.nist.gov/vuln/detail/CVE-2009-0079
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-012
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6147
• http://osvdb.org/53667
• http://www.securitytracker.com/id?1022044
• http://www.us-cert.gov/cas/techalerts/TA09-104A.html
• http://www.vupen.com/english/advisories/2009/1026