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CVE-2010-4020

UnknownEPSS 1.92%

Last modified

CVE-2010-4020 is a vulnerability of currently unknown severity. MIT Kerberos 5 (aka krb5) 1.8.x through 1.8.3 does not reject RC4 key-derivation checksums, which might allow remote authenticated users to forge a (1) AD-SIGNEDPATH or (2) AD-KDC-ISSUED signature, and possibly gain privileges, by leveraging the small key space that results from certain one-byte stream-cipher operations.. EPSS estimates a 1.92% chance of exploitation in the next 30 days.

Description

MIT Kerberos 5 (aka krb5) 1.8.x through 1.8.3 does not reject RC4 key-derivation checksums, which might allow remote authenticated users to forge a (1) AD-SIGNEDPATH or (2) AD-KDC-ISSUED signature, and possibly gain privileges, by leveraging the small key space that results from certain one-byte stream-cipher operations.

Metrics

EPSS Probability
1.92%

77.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
MitKerberos 51.8
MitKerberos 51.8.1
MitKerberos 51.8.2
MitKerberos 51.8.3

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2010-4020?
MIT Kerberos 5 (aka krb5) 1.8.x through 1.8.3 does not reject RC4 key-derivation checksums, which might allow remote authenticated users to forge a (1) AD-SIGNEDPATH or (2) AD-KDC-ISSUED signature, and possibly gain privileges, by leveraging the small key space that results from certain one-byte stream-cipher operations.
How severe is CVE-2010-4020?
Severity scoring for CVE-2010-4020 is pending analysis. The EPSS model estimates a 1.92% probability of exploitation in the next 30 days.
How do I fix CVE-2010-4020?
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-2010-4020?

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

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Source: NVD / NIST