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Resource Exhaustion Affecting bind-license package, versions <32:9.11.4-16.P2.el7

medium

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 1.71% (88th percentile)
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NVD
7.5 high
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SUSE
7.5 high
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Red Hat
7.5 high

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  • Snyk ID SNYK-CENTOS7-BINDLICENSE-2157125
  • published 26 Jul 2021
  • disclosed 20 Nov 2019
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Introduced: 20 Nov 2019

CVE-2019-6477 Open this link in a new tab
CWE-400 Open this link in a new tab

How to fix?

Upgrade Centos:7 bind-license to version 32:9.11.4-16.P2.el7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bind-license package and not the bind-license package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

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).

References