Access Restriction Bypass Affecting krb5-server-ldap package, versions <0:1.13.2-10.el7


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.43% (76th percentile)

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  • Snyk IDSNYK-RHEL7-KRB5SERVERLDAP-5102370
  • published26 Jul 2021
  • disclosed27 Apr 2015

Introduced: 27 Apr 2015

CVE-2015-2694  (opens in a new tab)
CWE-264  (opens in a new tab)

How to fix?

Upgrade RHEL:7 krb5-server-ldap to version 0:1.13.2-10.el7 or higher.
This issue was patched in RHSA-2015:2154.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5-server-ldap package and not the krb5-server-ldap package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

The kdcpreauth modules in MIT Kerberos 5 (aka krb5) 1.12.x and 1.13.x before 1.13.2 do not properly track whether a client's request has been validated, which allows remote attackers to bypass an intended preauthentication requirement by providing (1) zero bytes of data or (2) an arbitrary realm name, related to plugins/preauth/otp/main.c and plugins/preauth/pkinit/pkinit_srv.c.

CVSS Scores

version 3.1