CVE-2023-50868 Affecting bind package, versions <9.18.24-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.05% (19th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-BIND-6245266
  • published13 Feb 2024
  • disclosed14 Feb 2024

Introduced: 13 Feb 2024

CVE-2023-50868  (opens in a new tab)

How to fix?

Upgrade Chainguard bind to version 9.18.24-r0 or higher.

NVD Description

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

CVSS Scores

version 3.1