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CVE-2026-14612

CVE-2026-14612 · Freeipa: ipa: idm: freeipa: off-by-one buffer overflows in ipa-otpd oauth2.c during oauth2 device authorization

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

Two off-by-one errors in the FreeIPA ipa-otpd daemon's OAuth2 device authorization handler can cause out-of-bounds memory access when processing an oversized response from a configured external OAuth2/OIDC Identity Provider. An attacker who controls or can man-in-the-middle the IdP endpoint may be able to trigger ipa-otpd to write or read one byte past the end of a fixed-size buffer. Exploitation requires FreeIPA to be configured with an external IdP, attacker control or MITM of that IdP, and a user to initiate the OAuth2 device authorization flow. The most likely impact is limited denial of service affecting the ipa-otpd daemon.

CVSS 4.2 · Medium · EPSS 0.1%

Published
Updated

Stack: system

Affected products and versions

  • red hat enterprise linux 10

    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

  • red hat enterprise linux 9

    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

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

    No fix published

  • 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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