{"id":"CVE-2003-0818","aliases":["EUVD-2003-0809","GHSA-whjg-p56q-xrf9"],"status":"published","title":"Multiple integer overflows in Microsoft ASN.1 library (MSASN1.DLL), as used in LSASS.EXE, CRYPT32...","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.","severity":{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.82241,"percentile":0.99661,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2004-02-11T05:00:00Z","modified":"2026-06-16T22:02:53Z","exploits":[{"source":"exploitdb","id":"EDB-153","title":"Microsoft Windows - ASN.1 'LSASS.exe' Remote Denial of Service (MS04-007)","type":"dos","platform":"windows","date":"2004-02-14","verified":true,"url":"https://www.exploit-db.com/exploits/153"},{"source":"exploitdb","id":"EDB-16377","title":"Microsoft Windows - ASN.1 Library Bitstring Heap Overflow (MS04-007) (Metasploit)","type":"remote","platform":"windows","date":"2010-07-25","verified":true,"url":"https://www.exploit-db.com/exploits/16377"},{"source":"exploitdb","id":"EDB-3022","title":"Microsoft Windows - ASN.1 Remote (MS04-007)","type":"remote","platform":"windows","date":"2004-03-26","verified":true,"url":"https://www.exploit-db.com/exploits/3022"},{"source":"metasploit","id":"exploit/windows/smb/ms04_007_killbill","title":"MS04-007 Microsoft ASN.1 Library Bitstring Heap Overflow","type":"exploit","platform":"Windows","date":"2004-02-10","verified":true,"url":"https://www.rapid7.com/db/modules/exploit/windows/smb/ms04_007_killbill"}],"products":[{"vendor":"microsoft","product":"windows_2000"},{"vendor":"microsoft","product":"windows_2003_server"},{"vendor":"microsoft","product":"windows_nt"},{"vendor":"microsoft","product":"windows_xp"}],"references":[{"url":"http://www.kb.cert.org/vuls/id/583108","tags":["third-party-advisory","x_refsource_CERT-VN","x_transferred","US Government Resource"]},{"url":"http://www.us-cert.gov/cas/techalerts/TA04-041A.html","tags":["third-party-advisory","x_refsource_CERT","x_transferred","US Government Resource"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A653","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"http://marc.info/?l=bugtraq\u0026m=107643836125615\u0026w=2","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://marc.info/?l=bugtraq\u0026m=107643892224825\u0026w=2","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A799","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A796","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"http://www.kb.cert.org/vuls/id/216324","tags":["third-party-advisory","x_refsource_CERT-VN","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-007","tags":["vendor-advisory","x_refsource_MS","x_transferred"]},{"url":"http://marc.info/?l=ntbugtraq\u0026m=107650972723080\u0026w=2","tags":["mailing-list","x_refsource_NTBUGTRAQ","x_transferred"]},{"url":"http://marc.info/?l=ntbugtraq\u0026m=107650972617367\u0026w=2","tags":["mailing-list","x_refsource_NTBUGTRAQ","x_transferred"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A797","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2003-0818"},{"url":"https://github.com/advisories/GHSA-whjg-p56q-xrf9"}],"sources":{"cve":[{"id":"CVE-2003-0818","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.","status":"published","published":"2004-02-11T05:00:00Z","modified":"2024-08-08T02:05:12.559Z","updated_at":"2026-11-02T14:20:17.11067Z"}],"euvd":[{"id":"EUVD-2003-0809","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.","status":"published","published":"2004-02-11T05:00:00Z","modified":"2024-08-08T02:05:12Z","updated_at":"2026-11-03T01:15:06.016782Z"}],"ghsa":[{"id":"GHSA-whjg-p56q-xrf9","title":"Multiple integer overflows in Microsoft ASN.1 library (MSASN1.DLL), as used in LSASS.EXE, CRYPT32...","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.","status":"published","published":"2022-04-29T01:27:02Z","modified":"2023-01-30T05:01:42Z","updated_at":"2026-11-02T14:46:27.869667Z"}],"nvd":[{"id":"CVE-2003-0818","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.","status":"published","published":"2004-03-03T05:00:00Z","modified":"2026-06-16T22:02:53.663Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:00:48.212104Z"}]}}