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Resource Exhaustion Affecting bind-export-libs package, versions <32:9.11.36-11.el8_9.1

0.0
high

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 3.66% (92nd 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-CENTOS8-BINDEXPORTLIBS-6246710
  • published 14 Feb 2024
  • disclosed 13 Feb 2024
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Introduced: 13 Feb 2024

CVE-2023-50387 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 32:9.11.36-11.el8_9.1 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.

Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.

References