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Resource Exhaustion Affecting bind-export-libs package, versions <32:9.11.20-5.el8

0.0
medium

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.43% (75th percentile)
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NVD
6.5 medium
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SUSE
6.5 medium
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Red Hat
6.5 medium

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  • Snyk ID SNYK-CENTOS8-BINDEXPORTLIBS-2074714
  • published 26 Jul 2021
  • disclosed 20 Aug 2020
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Introduced: 20 Aug 2020

CVE-2020-8622 Open this link in a new tab
CWE-400 Open this link in a new tab

How to fix?

Upgrade Centos:8 bind-export-libs to version 32:9.11.20-5.el8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bind-export-libs package and not the bind-export-libs package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

In BIND 9.0.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker on the network path for a TSIG-signed request, or operating the server receiving the TSIG-signed request, could send a truncated response to that request, triggering an assertion failure, causing the server to exit. Alternately, an off-path attacker would have to correctly guess when a TSIG-signed request was sent, along with other characteristics of the packet and message, and spoof a truncated response to trigger an assertion failure, causing the server to exit.

References