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CVE-2023-4236

CVE-2023-4236 · named may terminate unexpectedly under high DNS-over-TLS query load

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

A flaw in the networking code handling DNS-over-TLS queries may cause `named` to terminate unexpectedly due to an assertion failure. This happens when internal data structures are incorrectly reused under significant DNS-over-TLS query load. This issue affects BIND 9 versions 9.18.0 through 9.18.18 and 9.18.11-S1 through 9.18.18-S1.

CVSS 7.5 · High · EPSS 2.2% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • bind 9

    Versions
    • ≥ 9.18.0, ≤ 9.18.18: Affected (custom)
    • ≥ 9.18.11-S1, ≤ 9.18.18-S1: Affected (custom)

    No fix published

  • bind9 Debian:12

    Versions
    • 1:9.18.12-1
    • 1:9.18.13-1
    • 1:9.18.16-1
    • 1:9.18.16-1~deb12u1
    • 1:9.18.16-1~deb12u1~bpo11+1
    • 1:9.18.19-1~deb12u1~bpo11+1
    Affected ranges
    • ECOSYSTEM: < 1:9.18.19-1~deb12u1

    Update to 1:9.18.19-1~deb12u1

  • bind9 Debian:13

    Affected ranges
    • ECOSYSTEM: < 1:9.19.17-1

    Update to 1:9.19.17-1

  • bind9 Debian:14

    Affected ranges
    • ECOSYSTEM: < 1:9.19.17-1

    Update to 1:9.19.17-1

  • bind9 Ubuntu:22.04:LTS

    Versions
    • 1:9.16.15-1ubuntu1
    • 1:9.16.15-1ubuntu2
    • 1:9.16.15-1ubuntu3
    • 1:9.18.0-2ubuntu1
    • 1:9.18.0-2ubuntu2
    • 1:9.18.0-2ubuntu3
    • 1:9.18.1-1ubuntu1
    • 1:9.18.1-1ubuntu1.1
    • 1:9.18.1-1ubuntu1.2
    • 1:9.18.1-1ubuntu1.3
    • 1:9.18.12-0ubuntu0.22.04.1
    • 1:9.18.12-0ubuntu0.22.04.2
    Affected ranges
    • ECOSYSTEM: < 1:9.18.12-0ubuntu0.22.04.3

    Update to 1:9.18.12-0ubuntu0.22.04.3

  • bind9 Ubuntu:24.04:LTS

    Affected ranges
    • ECOSYSTEM: < 1:9.18.18-0ubuntu2

    Update to 1:9.18.18-0ubuntu2

Original sources

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