Security readout for executives and security teams
CVE-2023-50868 is a DNSSEC validation weakness that can make recursive DNS infrastructure spend excessive CPU on NSEC3 SHA-1 work. For a business, the concern is DNS service degradation, not data theft. Public sources rate it high, but this bundle does not show CISA KEV listing or confirmed active exploitation. Exposure is most relevant to organizations running DNSSEC-validating recursive resolvers or DNS resolver packages covered by the listed vendor advisories. The bundle does not provide a definitive affected-product matrix, so teams should map their DNS software and versions against vendor guidance. Prioritize remediation for internet-facing or shared recursive DNS services because DNS instability can disrupt many business applications at once. Treat this as a high availability risk, especially where DNSSEC validation is enabled and resolver CPU headroom is limited. Mitigation focus: Inventory recursive DNS resolvers and confirm whether DNSSEC validation is enabled.; Apply vendor security updates for affected resolver software where advisories match your environment.; Review vendor guidance for Unbound, BIND, PowerDNS Recursor, Knot Resolver, and dnsmasq as applicable..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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Open ATT&CK lookupCVE-2023-50868 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/CVE reference
- https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.htmlCVE reference
- https://www.isc.org/blogs/2024-bind-security-release/CVE reference
- https://datatracker.ietf.org/doc/html/rfc5155CVE reference
- https://kb.isc.org/docs/cve-2023-50868CVE reference
- https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1CVE reference
- https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.htmlCVE reference
- https://access.redhat.com/security/cve/CVE-2023-50868CVE reference
- https://bugzilla.suse.com/show_bug.cgi?id=1219826CVE reference
- FEDORA-2024-2e26eccfcbCVE reference · vendor-advisory
- FEDORA-2024-e24211eff0CVE reference · vendor-advisory
- FEDORA-2024-21310568faCVE reference · vendor-advisory
- [debian-lts-announce] 20240221 [SECURITY] [DLA 3736-1] unbound security updateCVE reference · mailing-list
- FEDORA-2024-b0f9656a76CVE reference · vendor-advisory
- FEDORA-2024-4e36df9dfdCVE reference · vendor-advisory
- FEDORA-2024-499b9be35fCVE reference · vendor-advisory
- FEDORA-2024-c36c448396CVE reference · vendor-advisory
- FEDORA-2024-c967c7d287CVE reference · vendor-advisory
- FEDORA-2024-e00eceb11cCVE reference · vendor-advisory
- FEDORA-2024-fae88b73ebCVE reference · vendor-advisory
- https://security.netapp.com/advisory/ntap-20240307-0008/CVE reference
- [debian-lts-announce] 20240517 [SECURITY] [DLA 3816-1] bind9 security updateCVE reference · mailing-list
- https://lists.debian.org/debian-lts-announce/2024/11/msg00035.htmlCVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Uncontrolled Resource Consumption
Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.