Incorrect Authorization Affecting ipa-server-dns package, versions *


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.12% (48th percentile)

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  • Snyk IDSNYK-RHEL7-IPASERVERDNS-7240648
  • published10 Jun 2024
  • disclosed10 Jun 2024

Introduced: 10 Jun 2024

CVE-2024-2698  (opens in a new tab)
CWE-863  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 ipa-server-dns.

NVD Description

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

A vulnerability was found in FreeIPA in how the initial implementation of MS-SFU by MIT Kerberos was missing a condition for granting the "forwardable" flag on S4U2Self tickets. Fixing this mistake required adding a special case for the check_allowed_to_delegate() function: If the target service argument is NULL, then it means the KDC is probing for general constrained delegation rules and not checking a specific S4U2Proxy request.

In FreeIPA 4.11.0, the behavior of ipadb_match_acl() was modified to match the changes from upstream MIT Kerberos 1.20. However, a mistake resulting in this mechanism applies in cases where the target service argument is set AND where it is unset. This results in S4U2Proxy requests being accepted regardless of whether or not there is a matching service delegation rule.

CVSS Scores

version 3.1