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


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
1.92% (78th percentile)

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  • Snyk IDSNYK-CENTOS6-KRB5SERVER-2035994
  • 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 Centos:6 krb5-server to version 0:1.8.2-3.el6_0.3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5-server package and not the krb5-server package as distributed by Centos. See How to fix? for Centos: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