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CVE-2023-2911

CVE-2023-2911 · Exceeding the recursive-clients quota may cause named to terminate unexpectedly when stale-answer-client-timeout is set to 0

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

If the `recursive-clients` quota is reached on a BIND 9 resolver configured with both `stale-answer-enable yes;` and `stale-answer-client-timeout 0;`, a sequence of serve-stale-related lookups could cause `named` to loop and terminate unexpectedly due to a stack overflow. This issue affects BIND 9 versions 9.16.33 through 9.16.41, 9.18.7 through 9.18.15, 9.16.33-S1 through 9.16.41-S1, and 9.18.11-S1 through 9.18.15-S1.

CVSS 7.5 · High · EPSS 2.5% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • bind 9

    Versions
    • ≥ 9.16.33, ≤ 9.16.41: Affected (custom)
    • ≥ 9.18.7, ≤ 9.18.15: Affected (custom)
    • ≥ 9.16.33-S1, ≤ 9.16.41-S1: Affected (custom)
    • ≥ 9.18.11-S1, ≤ 9.18.15-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~deb12u1~bpo11+1
    Affected ranges
    • ECOSYSTEM: < 1:9.18.16-1~deb12u1

    Update to 1:9.18.16-1~deb12u1

  • bind9 Debian:13

    Affected ranges
    • ECOSYSTEM: < 1:9.18.16-1

    Update to 1:9.18.16-1

  • bind9 Debian:14

    Affected ranges
    • ECOSYSTEM: < 1:9.18.16-1

    Update to 1:9.18.16-1

  • bind9 Ubuntu:20.04:LTS

    Versions
    • 1:9.11.5.P4+dfsg-5.1ubuntu2
    • 1:9.11.5.P4+dfsg-5.1ubuntu3
    • 1:9.11.5.P4+dfsg-5.1ubuntu4
    • 1:9.11.5.P4+dfsg-5.1ubuntu5
    • 1:9.11.14+dfsg-1ubuntu1
    • 1:9.11.14+dfsg-3ubuntu1
    • 1:9.16.0-1ubuntu3
    • 1:9.16.0-1ubuntu4
    • 1:9.16.0-1ubuntu5
    • 1:9.16.1-0ubuntu1
    • 1:9.16.1-0ubuntu2
    • 1:9.16.1-0ubuntu2.1
    • 1:9.16.1-0ubuntu2.2
    • 1:9.16.1-0ubuntu2.3
    • 1:9.16.1-0ubuntu2.4
    • 1:9.16.1-0ubuntu2.6
    • 1:9.16.1-0ubuntu2.7
    • 1:9.16.1-0ubuntu2.8
    • 1:9.16.1-0ubuntu2.9
    • 1:9.16.1-0ubuntu2.10
    • 1:9.16.1-0ubuntu2.11
    • 1:9.16.1-0ubuntu2.12
    • 1:9.16.1-0ubuntu2.14
    Affected ranges
    • ECOSYSTEM: < 1:9.16.1-0ubuntu2.15

    Update to 1:9.16.1-0ubuntu2.15

  • 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
    Affected ranges
    • ECOSYSTEM: < 1:9.18.12-0ubuntu0.22.04.2

    Update to 1:9.18.12-0ubuntu0.22.04.2

Original sources

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