CVE-2010-4020

Description

From CVE.org

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.

Statement

This issue did not affect the versions of krb5 as shipped with Red Hat Enterprise Linux 3, 4 and 5.

Common Vulnerability Scoring System (CVSS) Score Details

Info alert:Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

CVSS v2 Score Breakdown

Red HatNVDcve.org
Base Score3.53.5N/A
Attack VectorNetworkNetworkN/A
Access ComplexityMediumMediumN/A
AuthenticationSingleSingleN/A
Confidentiality ImpactNoneNoneN/A
Integrity ImpactPartialPartialN/A
Availability ImpactNoneNoneN/A

Vector

Red Hat: AV:N/AC:M/Au:S/C:N/I:P/A:N

NVD: AV:N/AC:M/Au:S/C:N/I:P/A:N

Acknowledgements

Red Hat would like to thank MIT Kerberos Team for reporting this issue.

Frequently Asked Questions

Not sure what something means? Check out our Security Glossary.

Want to get errata notifications? Sign up here.