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CVE-2003-0818

UnknownEPSS 84.01%

Last modified

CVE-2003-0818 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 84.01% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
84.01%

99.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
MicrosoftWindows 2000All versions
MicrosoftWindows 2003 Serverenterprise
MicrosoftWindows 2003 Serverenterprise_64-bit
MicrosoftWindows 2003 Serverr2
MicrosoftWindows 2003 Serverstandard
MicrosoftWindows 2003 Serverweb
MicrosoftWindows Nt4.0
MicrosoftWindows XpAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2003-0818?
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.
How severe is CVE-2003-0818?
Severity scoring for CVE-2003-0818 is pending analysis. The EPSS model estimates a 84.01% probability of exploitation in the next 30 days.
How do I fix CVE-2003-0818?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2003-0818?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST