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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 0.05% (16th percentile)
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Red Hat
7.5 high
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SUSE
7.5 high

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  • Snyk ID SNYK-CENTOS8-BINDEXPORTLIBS-6246830
  • published 14 Feb 2024
  • disclosed 13 Feb 2024
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Introduced: 13 Feb 2024

CVE-2023-50868 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.

The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the "NSEC3" issue. The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations.

References