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CVE-2026-11793

CVE-2026-11793 · 389-ds-base: 389-ds-base: stack buffer overflow in checkprefix() algorithm id parsing

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

A stack buffer overflow flaw was found in 389 Directory Server. The checkPrefix() function in pw.c copies an attacker-controlled algorithm ID into a 256-byte stack buffer without bounds checking when parsing reversible-encrypted attribute values. An attacker with Directory Manager privileges can crash the LDAP server by storing a crafted credential with an oversized algorithm ID. FORTIFY_SOURCE mitigates this to denial of service only.

CVSS 4.9 · Medium · EPSS 0.3%

Published
Updated

Stack: system

Affected products and versions

  • red hat directory server 11

    No fix published

  • red hat directory server 12

    No fix published

  • red hat directory server 13

    No fix published

  • 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

  • 389-ds-base Debian:12

    Versions
    • 2.3.1+dfsg1-1
    • 2.3.1+dfsg1-1+deb12u1
    • 2.3.4+dfsg1-1
    • 2.3.4+dfsg1-1.1
    • 2.4.4+dfsg1-1
    • 2.4.4+dfsg1-3
    • 2.4.5+dfsg1-1
    • 3.0.2+dfsg1-1
    • 3.1.1+dfsg1-1
    • 3.1.1+dfsg1-2
    • 3.1.1+dfsg1-3
    • 3.1.2+dfsg1-1
    • 3.1.2+vendor1-1
    • 3.1.2+vendor1-2
    • 3.3.0-1
    • 3.3.0-2
    • 3.3.1-1
    • 3.3.1-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • 389-ds-base Debian:13

    Versions
    • 3.1.2+dfsg1-1
    • 3.1.2+dfsg1-1+deb13u1
    • 3.1.2+vendor1-1
    • 3.1.2+vendor1-2
    • 3.3.0-1
    • 3.3.0-2
    • 3.3.1-1
    • 3.3.1-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • 389-ds-base Ubuntu:Pro:16.04:LTS

    Versions
    • 1.3.3.12-1build1
    • 1.3.3.13-1
    • 1.3.4.5-2
    • 1.3.4.8-1
    • 1.3.4.8-3
    • 1.3.4.8-3ubuntu1
    • 1.3.4.8-4
    • 1.3.4.9-1
    • 1.3.4.9-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • 389-ds-base Ubuntu:Pro:18.04:LTS

    Versions
    • 1.3.7.5-1
    • 1.3.7.5-1build1
    • 1.3.7.5-1build2
    • 1.3.7.9-1
    • 1.3.7.10-1
    • 1.3.7.10-1ubuntu1
    • 1.3.7.10-1ubuntu1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • 389-ds-base Ubuntu:Pro:20.04:LTS

    Versions
    • 1.4.1.6-4
    • 1.4.1.6-4build1
    • 1.4.2.4-1
    • 1.4.2.4-1build1
    • 1.4.3.2-1
    • 1.4.3.2-1build1
    • 1.4.3.6-2
    • 1.4.3.6-2ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • 389-ds-base Ubuntu:22.04:LTS

    Versions
    • 1.4.4.11-2build1
    • 1.4.4.11-2build2
    • 1.4.4.17-1
    • 2.0.11-2
    • 2.0.14-1
    • 2.0.15-1
    • 2.0.15-1ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • 389-ds-base Ubuntu:24.04:LTS

    Versions
    • 2.3.4+dfsg1-1
    • 2.4.4+dfsg1-1ubuntu1
    • 2.4.4+dfsg1-1ubuntu4
    • 2.4.4+dfsg1-3
    • 2.4.5+dfsg1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • 389-ds-base Ubuntu:25.10

    Versions
    • 3.1.2+dfsg1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • 389-ds-base Ubuntu:26.10

    Versions
    • 3.1.2+vendor1-2
    • 3.1.2+vendor1-2build1
    • 3.3.1-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • 389-ds-base Ubuntu:26.04:LTS

    Versions
    • 3.1.2+dfsg1-1
    • 3.1.2+vendor1-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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