Resource Exhaustion Affecting bind-libs package, versions <32:9.11.13-3.el8


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
2.76% (91st percentile)

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  • Snyk IDSNYK-RHEL8-BINDLIBS-3746098
  • published26 Jul 2021
  • disclosed20 Nov 2019

Introduced: 20 Nov 2019

CVE-2019-6477  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade RHEL:8 bind-libs to version 32:9.11.13-3.el8 or higher.
This issue was patched in RHSA-2020:1845.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bind-libs package and not the bind-libs package as distributed by RHEL. See How to fix? for RHEL:8 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).

CVSS Scores

version 3.1