CVE-2023-50387
high-risk
Published 2024-02-14
Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.
Do I need to act?
!
52.0% chance of exploitation in next 30 days
EPSS score — higher than 48% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10
High
NETWORK
/ LOW complexity
Affected Products (17)
Affected Vendors
References (66)
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-50387
Issue Tracking
https://bugzilla.suse.com/show_bug.cgi?id=1219823
Third Party Advisory
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01...
Third Party Advisory
https://kb.isc.org/docs/cve-2023-50387
and 46 more references
63
/ 100
high-risk
Severity
26/34 · High
Exploitability
18/34 · Moderate
Exposure
19/34 · Moderate