CVE-2003-0818

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 82.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2004-02-11 · updated 2026-06-16

Description

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.

Affected products

Microsoft Windows 2000: all versions
Microsoft Windows 2003 Server: enterprise, enterprise_64-bit, r2, standard, web
Microsoft Windows Nt: 4.0, 4.0-sp1, 4.0-sp2, 4.0-sp3, 4.0-sp4, 4.0-sp5 (+2)
Microsoft Windows XP Service Pack 3: all versions

References

http://marc.info/?l=bugtraq&m=107643836125615&w=2
http://marc.info/?l=bugtraq&m=107643892224825&w=2
http://marc.info/?l=ntbugtraq&m=107650972617367&w=2
http://marc.info/?l=ntbugtraq&m=107650972723080&w=2
http://www.kb.cert.org/vuls/id/216324
http://www.kb.cert.org/vuls/id/583108
http://www.us-cert.gov/cas/techalerts/TA04-041A.html
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-007
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A653
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%3A797
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A799

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