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CVE-2026-86345

CVE-2026-86345 · 389-ds-base: 389-ds-base: starttls plaintext-buffer retention allows on-path attacker to forge an ldap client's authentication result

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

A flaw was found in 389-ds-base. The server does not discard plaintext bytes already buffered from a client connection when negotiating StartTLS, allowing an on-path attacker to inject a crafted LDAP message that is processed after the TLS upgrade and whose response is delivered to the client in place of the client's own pending operation's response, due to messageID collision. This can cause a client application to treat a failed authentication (bind) attempt as successful.

CVSS 9.0 · Critical · EPSS 0.4%

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: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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