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OpenAdvisories
High ALSA-2024:0977 2 CVEs

Important: unbound security update

Published Feb 26, 2024 · Updated Oct 29, 2026

Summary

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver.

Security Fix(es):

* bind9: KeyTrap - Extreme CPU consumption in DNSSEC validator (CVE-2023-50387)
* bind9: Preparing an NSEC3 closest encloser proof can exhaust CPU resources (CVE-2023-50868)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 4

ReleasePackageFixed in
AlmaLinux · 9 python3-unbound 1.16.2-3.el9_3.1
AlmaLinux · 9 unbound 1.16.2-3.el9_3.1
AlmaLinux · 9 unbound-devel 1.16.2-3.el9_3.1
AlmaLinux · 9 unbound-libs 1.16.2-3.el9_3.1

Vulnerabilities 2

References

  • report
    https://access.redhat.com/security/cve/CVE-2023-50387
  • report
    https://access.redhat.com/security/cve/CVE-2023-50868
  • report
    https://bugzilla.redhat.com/2263914
  • report
    https://bugzilla.redhat.com/2263917
  • advisory
    https://errata.almalinux.org/9/ALSA-2024-0977.html