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CVE-2019-6477

CVE-2019-6477 · TCP-pipelined queries can bypass tcp-clients limit

Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.

With pipelining enabled each incoming query on a TCP connection requires a similar resource allocation to a query received via UDP or via TCP without pipelining enabled. A client using a TCP-pipelined connection to a server could consume more resources than the server has been provisioned to handle. When a TCP connection with a large number of pipelined queries is closed, the load on the server releasing these multiple resources can cause it to become unresponsive, even for queries that can be answered authoritatively or from cache. (This is most likely to be perceived as an intermittent server problem).

CVSS 7.5 · Alta · EPSS 4,1% · Corrección disponible

Publicación
Actualización

Pila tecnológica: system

Productos y versiones afectados

  • bind9

    Versiones
    • 9.11.6-P1 -> 9.11.12, 9.12.4-P1 -> 9.12.4-P2, 9.14.1 -> 9.14.7, and versions 9.11.5-S6 -> 9.11.12-S1 of BIND 9 Supported Preview Edition. Versions 9.15.0 -> 9.15.5 of the BIND 9.15 development branch are also affected: Afectada

    Sin corrección publicada

  • bind9 Debian:12

    Intervalos de versiones afectados
    • ECOSYSTEM: < 1:9.11.14+dfsg-1

    Actualiza a 1:9.11.14+dfsg-1

  • bind9 Debian:13

    Intervalos de versiones afectados
    • ECOSYSTEM: < 1:9.11.14+dfsg-1

    Actualiza a 1:9.11.14+dfsg-1

  • bind9 Debian:14

    Intervalos de versiones afectados
    • ECOSYSTEM: < 1:9.11.14+dfsg-1

    Actualiza a 1:9.11.14+dfsg-1

  • bind9 Ubuntu:18.04:LTS

    Versiones
    • 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
    • 1:9.11.3+dfsg-1ubuntu1.7
    • 1:9.11.3+dfsg-1ubuntu1.8
    • 1:9.11.3+dfsg-1ubuntu1.9
    • 1:9.11.3+dfsg-1ubuntu1.10
    Intervalos de versiones afectados
    • ECOSYSTEM: < 1:9.11.3+dfsg-1ubuntu1.11

    Actualiza a 1:9.11.3+dfsg-1ubuntu1.11

Fuentes originales

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