Multiple integer overflows in Microsoft ASN.1 library (MSASN1.DLL), as used in LSASS.EXE, CRYPT32.DLL, and other Microsoft executables and libraries on Windows NT 4.0, 2000, and XP, allow remote attackers to execute arbitrary code via ASN.1 BER encodings with (1) very large length fields that cause arbitrary heap data to be overwritten, or (2) modified bit strings.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A799
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A797
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A796
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A653
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-007
http://www.us-cert.gov/cas/techalerts/TA04-041A.html
http://www.kb.cert.org/vuls/id/583108
http://www.kb.cert.org/vuls/id/216324
http://marc.info/?l=ntbugtraq&m=107650972723080&w=2
http://marc.info/?l=ntbugtraq&m=107650972617367&w=2