UpHeron
All vulnerabilities

Servers and applications

CVE-2023-50868

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…

Severity
High 7.5
Published
14 Feb 2024
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
9.16.48, 9.18.24, 9.19.21
Sources
NVD

Affected software

SoftwareAffected versions
BIND 9Servers and applications · cpe:a:isc:bind
  • From 9.0.0 before 9.16.48
  • From 9.9.3 before 9.16.48
  • From 9.18.0 before 9.18.24
  • From 9.18.11 before 9.18.24
  • From 9.19.0 before 9.19.21

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-50868
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-50868