// For flags

CVE-2022-30256

Debian Security Advisory 5441-1

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

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.

Se descubrió un problema en MaraDNS Deadwood hasta 3.5.0021 que permite la variante V1 de resolución de nombres de dominio no deseada. Un nombre de dominio revocado aún se puede resolver durante mucho tiempo, incluidos dominios caducados y dominios maliciosos eliminados. Los efectos de un exploit serían generalizados y de gran impacto, porque la explotación se ajusta a las especificaciones y prácticas operativas de DNS de facto, y supera los parches de mitigación actuales para los nombres de dominio "Ghost"

Xiang Li discovered that MaraDNS incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to obtain sensitive information. Huascar Tejeda discovered that MaraDNS incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to cause a denial of service.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Complete
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2022-05-04 CVE Reserved
  • 2022-11-18 CVE Published
  • 2025-04-29 CVE Updated
  • 2025-08-13 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-672: Operation on a Resource after Expiration or Release
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Maradns
Search vendor "Maradns"
 Maradns
Search vendor "Maradns" for product "Maradns"
 < 3.4.03
Search vendor "Maradns" for product "Maradns" and version " < 3.4.03"
-
Affected
Maradns
Search vendor "Maradns"
 Maradns
Search vendor "Maradns" for product "Maradns"
 >= 3.5.0 < 3.5.0022
Search vendor "Maradns" for product "Maradns" and version " >= 3.5.0 < 3.5.0022"
-
Affected