Vulnerability · Published Nov 18, 2022 · Assigned by mitre
CVE-2022-30256
High 7.5
In plain English
A high-severity security flaw in the maradns package (Ubuntu). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | maradns | 2.0.13-1.4+deb11u1build0.22.04.1 | USN-6271-1 |
| Ubuntu:22.04:LTS | maradns | 2.0.13-1.4+deb11u1build0.22.04.1 | UBUNTU-CVE-2022-30256 |
Affected products (as reported)
Weakness: CWE-672 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
References
- https://maradns.samiam.org/
- https://maradns.samiam.org/security.html#CVE-2022-30256
- FEDORA-2023-0c012f6245 vendor-advisory
- FEDORA-2023-cdce244fb8 vendor-advisory
- [debian-lts-announce] 20230619 [SECURITY] [DLA 3457-1] maradns security update mailing-list
- DSA-5441 vendor-advisory