Resource exhaustion in Isc Bind
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…
Vulnerability class: DoS (Denial of Service)
EPSS: 0.817 (99.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Release Notes)
- cve@mitre.org (Vendor Advisory)
- cve@mitre.org (Exploit, Mitigation, Press/Media Coverage)
- cve@mitre.org (Technical Description)
- cve@mitre.org (Third Party Advisory)
- cve@mitre.org (Release Notes)
- cve@mitre.org (Mailing List, Release Notes)
- cve@mitre.org (Vendor Advisory)
- cve@mitre.org (Issue Tracking)
- cve@mitre.org (mailing-list, Mailing List, Issue Tracking)
Frequently asked questions
- What is CVE-2023-50868?
- CVE-2023-50868 is a high-severity vulnerability in Isc Bind, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2024-02-14.
- How severe is CVE-2023-50868?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-50868 known to be exploited?
- 15 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.