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CVE-2024-2698

CVE-2024-2698 · Freeipa: delegation rules allow a proxy service to impersonate any user to access another target service

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 8.8 · High · EPSS 0.7% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • red hat enterprise linux 8

    Versions
    • ≥ 8100020240528133707.823393f5: Not affected (rpm)

    No fix published

  • red hat enterprise linux 8.8 extended update support

    Versions
    • ≥ 8080020240530051744.b0a6ceea: Not affected (rpm)

    No fix published

  • red hat enterprise linux 9

    Versions
    • ≥ 0:4.11.0-15.el9_4: Not affected (rpm)

    No fix published

  • red hat enterprise linux 9.2 extended update support

    Versions
    • ≥ 0:4.10.1-12.el9_2.2: Not affected (rpm)

    No fix published

  • red hat enterprise linux 6

    No fix published

  • red hat enterprise linux 7

    No fix published

  • red hat enterprise linux 8

    No fix published

  • freeipa Debian:12

    Versions
    • 4.10.1+dfsg1-1+exp1
    • 4.10.1-1+exp1
    • 4.10.2-1
    • 4.10.2-2
    • 4.10.2-2+exp1
    • 4.11.1-1
    • 4.11.1-1+exp1
    • 4.11.1-2
    • 4.11.1-2+exp1
    • 4.11.1-2.1
    • 4.12.2-1
    • 4.12.2-2
    • 4.12.2-3
    • 4.12.4-1
    • 4.12.4-2
    • 4.13.1-1
    • 4.9.11-1
    • 4.9.11-1+exp1
    • 4.9.11-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • freeipa Debian:13

    Affected ranges
    • ECOSYSTEM: < 4.12.2-1

    Update to 4.12.2-1

  • freeipa Ubuntu:Pro:14.04:LTS

    Versions
    • 3.2.1-0ubuntu1
    • 3.3.4-0ubuntu1
    • 3.3.4-0ubuntu2
    • 3.3.4-0ubuntu3
    • 3.3.4-0ubuntu3.1
    • 3.3.4-0ubuntu3.1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • freeipa Ubuntu:Pro:16.04:LTS

    Versions
    • 4.1.4-1
    • 4.3.1-0ubuntu1
    • 4.3.1-0ubuntu1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • freeipa Ubuntu:18.04:LTS

    Versions
    • 4.4.4-3ubuntu1
    • 4.4.4-4
    • 4.7.0~pre1+git20180411-2ubuntu1
    • 4.7.0~pre1+git20180411-2ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • freeipa Ubuntu:20.04:LTS

    Versions
    • 4.8.1-2ubuntu1
    • 4.8.3-1
    • 4.8.6-1ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • freeipa Ubuntu:22.04:LTS

    Versions
    • 4.8.6-1ubuntu6
    • 4.8.6-1ubuntu8
    • 4.8.6-1ubuntu9
    • 4.9.8-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • freeipa Ubuntu:24.04:LTS

    Versions
    • 4.10.2-1
    • 4.10.2-2
    • 4.10.2-2ubuntu3
    • 4.11.1-1
    • 4.11.1-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • freeipa Ubuntu:25.10

    Versions
    • 4.12.2-3
    • 4.12.4-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • freeipa Ubuntu:26.10

    Versions
    • 4.13.1-1
    • 4.13.1-1build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • freeipa Ubuntu:26.04:LTS

    Versions
    • 4.12.4-1
    • 4.12.4-2
    • 4.13.1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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