Cryptographic Issues Affecting krb5-devel package, versions <0:1.8.2-3.el6_0.3


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
1.92% (78th percentile)

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  • Snyk IDSNYK-RHEL6-KRB5DEVEL-1419388
  • published26 Jul 2021
  • disclosed30 Nov 2010

Introduced: 30 Nov 2010

CVE-2010-4020  (opens in a new tab)
CWE-310  (opens in a new tab)

How to fix?

Upgrade RHEL:6 krb5-devel to version 0:1.8.2-3.el6_0.3 or higher.
This issue was patched in RHSA-2010:0925.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5-devel package and not the krb5-devel package as distributed by RHEL. See How to fix? for RHEL:6 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1