Vulnerability in Maradns
CVE-2022-30256
An issue was discovered in MaraDNS Deadwood through 3.5.0021 that allows variant V1 of unintended domain name resolution. A revoked domain name can still be resolvable for a long time, including expired domains and taken-down malicious domains. The effects of an exploit would be widespread and highly impactful, because the exploitation conforms to de facto DNS specifications and operational practices, and overcomes current mitigation patches for "Ghost" domain names.
Published · last modified .
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:H/A:N.
EPSS exploit prediction
EPSS: 0.010 (60.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.010 · change: +0.000
Affected products
Weakness classification (CWE)
References
- maradns.samiam.org/ (Product, Vendor Advisory)
- maradns.samiam.org/security.html (Vendor Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.debian.org/debian-lts-announce/2023/06/msg00019.html (mailing-list)
- www.debian.org/security/2023/dsa-5441 (vendor-advisory)
Frequently asked questions
- What is CVE-2022-30256?
- CVE-2022-30256 is a high-severity vulnerability in Maradns, classified under Operation on a Resource after Expiration or Release. CVSS score: 7.5/10. Published 2022-11-19.
- How severe is CVE-2022-30256?
- High severity. CVSS v3 base score is 7.5 out of 10.