Reachable Assertion Affecting bind-dnssec-utils package, versions <32:9.18.50-1.amzn2023.0.2


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.51% (41st percentile)

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  • Snyk IDSNYK-AMZN2023-BINDDNSSECUTILS-18532333
  • published5 Aug 2026
  • disclosed22 Jul 2026

Introduced: 22 Jul 2026

NewCVE-2026-13204  (opens in a new tab)
CWE-617  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 bind-dnssec-utils to version 32:9.18.50-1.amzn2023.0.2 or higher.
This issue was patched in ALAS2023-2026-2040.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bind-dnssec-utils package and not the bind-dnssec-utils package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

If a provably insecure domain is covered by both an NSEC and NSEC3 record at the parent, and there exist an RRSIG for only one of these types, then BIND may exit unexpectedly with an assertion while validating this proof. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.

CVSS Base Scores

version 3.1