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CVE-2018-5743

CVE-2018-5743 · Limiting simultaneous TCP clients was ineffective

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

By design, BIND is intended to limit the number of TCP clients that can be connected at any given time. The number of allowed connections is a tunable parameter which, if unset, defaults to a conservative value for most servers. Unfortunately, the code which was intended to limit the number of simultaneous connections contained an error which could be exploited to grow the number of simultaneous connections beyond this limit. Versions affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.6, 9.12.0 -> 9.12.4, 9.14.0. BIND 9 Supported Preview Edition versions 9.9.3-S1 -> 9.11.5-S3, and 9.11.5-S5. Versions 9.13.0 -> 9.13.7 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5743.

CVSS 7.5 · High · EPSS 6.5% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • bind 9

    Versions
    • BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.6, 9.12.0 -> 9.12.4, 9.14.0. BIND 9 Supported Preview Edition versions 9.9.3-S1 -> 9.11.5-S3, and 9.11.5-S5. Versions 9.13.0 -> 9.13.7 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5743.: Affected

    No fix published

  • bind9 Debian:12

    Affected ranges
    • ECOSYSTEM: < 1:9.11.5.P4+dfsg-4

    Update to 1:9.11.5.P4+dfsg-4

  • bind9 Debian:13

    Affected ranges
    • ECOSYSTEM: < 1:9.11.5.P4+dfsg-4

    Update to 1:9.11.5.P4+dfsg-4

  • bind9 Debian:14

    Affected ranges
    • ECOSYSTEM: < 1:9.11.5.P4+dfsg-4

    Update to 1:9.11.5.P4+dfsg-4

  • bind9 Ubuntu:Pro:14.04:LTS

    Versions
    • 1:9.9.3.dfsg.P2-4ubuntu1
    • 1:9.9.3.dfsg.P2-4ubuntu2
    • 1:9.9.3.dfsg.P2-4ubuntu3
    • 1:9.9.5.dfsg-2
    • 1:9.9.5.dfsg-3
    • 1:9.9.5.dfsg-3ubuntu0.1
    • 1:9.9.5.dfsg-3ubuntu0.2
    • 1:9.9.5.dfsg-3ubuntu0.3
    • 1:9.9.5.dfsg-3ubuntu0.4
    • 1:9.9.5.dfsg-3ubuntu0.5
    • 1:9.9.5.dfsg-3ubuntu0.6
    • 1:9.9.5.dfsg-3ubuntu0.7
    • 1:9.9.5.dfsg-3ubuntu0.8
    • 1:9.9.5.dfsg-3ubuntu0.9
    • 1:9.9.5.dfsg-3ubuntu0.10
    • 1:9.9.5.dfsg-3ubuntu0.11
    • 1:9.9.5.dfsg-3ubuntu0.12
    • 1:9.9.5.dfsg-3ubuntu0.13
    • 1:9.9.5.dfsg-3ubuntu0.14
    • 1:9.9.5.dfsg-3ubuntu0.15
    • 1:9.9.5.dfsg-3ubuntu0.16
    • 1:9.9.5.dfsg-3ubuntu0.17
    • 1:9.9.5.dfsg-3ubuntu0.18
    • 1:9.9.5.dfsg-3ubuntu0.19
    Affected ranges
    • ECOSYSTEM: < 1:9.9.5.dfsg-3ubuntu0.19+esm1

    Update to 1:9.9.5.dfsg-3ubuntu0.19+esm1

  • bind9 Ubuntu:16.04:LTS

    Versions
    • 1:9.9.5.dfsg-11ubuntu1
    • 1:9.9.5.dfsg-12
    • 1:9.9.5.dfsg-12.1
    • 1:9.9.5.dfsg-12.1ubuntu1
    • 1:9.10.3.dfsg.P2-4
    • 1:9.10.3.dfsg.P2-5
    • 1:9.10.3.dfsg.P4-3
    • 1:9.10.3.dfsg.P4-4
    • 1:9.10.3.dfsg.P4-5
    • 1:9.10.3.dfsg.P4-8
    • 1:9.10.3.dfsg.P4-8ubuntu1
    • 1:9.10.3.dfsg.P4-8ubuntu1.1
    • 1:9.10.3.dfsg.P4-8ubuntu1.2
    • 1:9.10.3.dfsg.P4-8ubuntu1.3
    • 1:9.10.3.dfsg.P4-8ubuntu1.4
    • 1:9.10.3.dfsg.P4-8ubuntu1.5
    • 1:9.10.3.dfsg.P4-8ubuntu1.6
    • 1:9.10.3.dfsg.P4-8ubuntu1.7
    • 1:9.10.3.dfsg.P4-8ubuntu1.8
    • 1:9.10.3.dfsg.P4-8ubuntu1.9
    • 1:9.10.3.dfsg.P4-8ubuntu1.10
    • 1:9.10.3.dfsg.P4-8ubuntu1.11
    • 1:9.10.3.dfsg.P4-8ubuntu1.12
    Affected ranges
    • ECOSYSTEM: < 1:9.10.3.dfsg.P4-8ubuntu1.14

    Update to 1:9.10.3.dfsg.P4-8ubuntu1.14

  • bind9 Ubuntu:18.04:LTS

    Versions
    • 1:9.10.3.dfsg.P4-12.6ubuntu1
    • 1:9.11.2.P1-1ubuntu2
    • 1:9.11.2.P1-1ubuntu3
    • 1:9.11.2.P1-1ubuntu4
    • 1:9.11.2.P1-1ubuntu5
    • 1:9.11.3+dfsg-1ubuntu1
    • 1:9.11.3+dfsg-1ubuntu1.1
    • 1:9.11.3+dfsg-1ubuntu1.2
    • 1:9.11.3+dfsg-1ubuntu1.3
    • 1:9.11.3+dfsg-1ubuntu1.5
    Affected ranges
    • ECOSYSTEM: < 1:9.11.3+dfsg-1ubuntu1.7

    Update to 1:9.11.3+dfsg-1ubuntu1.7

Original sources

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