CVE-2022-30256
An issue was discovered in MaraDNS Deadwood through 3.5.0021 that allows variant V1 of unintended...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
7.5
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.
- Record
CVE-2022-30256- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-672
- Updated
- 2026-11-02
CVE List
7.5
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.
- Record
CVE-2022-30256- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-672
- Updated
- 2026-11-02
EUVDEUVD-2022-35461
7.5
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.
- Record
EUVD-2022-35461- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-qqpw-wxfv-vfcg
7.5
An issue was discovered in MaraDNS Deadwood through 3.5.0021 that allows variant V1 of unintended...
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.
- Record
GHSA-qqpw-wxfv-vfcg- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-672
- Updated
- 2026-11-02
OSV
7.5
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.
- Record
CVE-2022-30256- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2022-30256
7.5
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.
- Record
DEBIAN-CVE-2022-30256- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2022-30256
7.5
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.
- Record
UBUNTU-CVE-2022-30256- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVUSN-6271-1 No score
maradns vulnerabilities
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. (CVE-2022-30256)
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. (CVE-2023-31137)
- Record
USN-6271-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
maradnsDebian:11 |
before 2.0.13-1.4+deb11u1, plus listed versions 2.0.13-1.4 |
2.0.13-1.4+deb11u1 |
maradnsDebian:10 From an advisory covering 2 CVEs |
before 2.0.13-1.2+deb10u1, plus listed versions 2.0.13-1.2 |
2.0.13-1.2+deb10u1 |
maradnsDebian:11 From an advisory covering 2 CVEs |
before 2.0.13-1.4+deb11u1, plus listed versions 2.0.13-1.4 |
2.0.13-1.4+deb11u1 |
maradnsUbuntu:Pro:16.04:LTS |
before 2.0.13-1ubuntu0.1~esm1, plus listed versions 2.0.11-12.0.13-1 |
2.0.13-1ubuntu0.1~esm1 |
maradnsUbuntu:Pro:18.04:LTS |
before 2.0.13-1.2ubuntu0.1~esm1, plus listed versions 2.0.13-1.2 |
2.0.13-1.2ubuntu0.1~esm1 |
maradnsUbuntu:20.04:LTS |
before 2.0.13-1.4+deb11u1build0.20.04.1, plus listed versions 2.0.13-1.2build12.0.13-1.42.0.13-1.4build1 |
2.0.13-1.4+deb11u1build0.20.04.1 |
maradnsUbuntu:22.04:LTS |
before 2.0.13-1.4+deb11u1build0.22.04.1, plus listed versions 2.0.13-1.4build2 |
2.0.13-1.4+deb11u1build0.22.04.1 |
maradnsUbuntu:Pro:16.04:LTS From an advisory covering 2 CVEs |
before 2.0.13-1ubuntu0.1~esm1, plus listed versions 2.0.11-12.0.13-1 |
2.0.13-1ubuntu0.1~esm1 |
maradnsUbuntu:Pro:18.04:LTS From an advisory covering 2 CVEs |
before 2.0.13-1.2ubuntu0.1~esm1, plus listed versions 2.0.13-1.2 |
2.0.13-1.2ubuntu0.1~esm1 |
maradnsUbuntu:20.04:LTS From an advisory covering 2 CVEs |
before 2.0.13-1.4+deb11u1build0.20.04.1, plus listed versions 2.0.13-1.2build12.0.13-1.42.0.13-1.4build1 |
2.0.13-1.4+deb11u1build0.20.04.1 |
maradnsUbuntu:22.04:LTS From an advisory covering 2 CVEs |
before 2.0.13-1.4+deb11u1build0.22.04.1, plus listed versions 2.0.13-1.4build2 |
2.0.13-1.4+deb11u1build0.22.04.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2022-30256 is a high vulnerability (CVSS 7.5) in Maradns, published November 18, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.97%, the 61st percentile. Fixed in maradns 2.0.13-1.4+deb11u1.
References
maradns.samiam.org
maradns.samiam.org/security.html
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NB7LDZM5AGWC5BHHQHW6CP5OFNBBKFOQ
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3VSMLJX25MXGQ6A7UPOGK7VPUVDESPHL
lists.debian.org/debian-lts-announce/2023/06/msg00019.html
debian.org/security/2023/dsa-5441
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nvd.nist.gov/vuln/detail/CVE-2022-30256
lists.fedoraproject.org/archives/list/[email protected]/message/3VSMLJX25MXGQ6A7UPOGK7VPUVDESPHL
lists.fedoraproject.org/archives/list/[email protected]/message/NB7LDZM5AGWC5BHHQHW6CP5OFNBBKFOQ
github.com/advisories/GHSA-qqpw-wxfv-vfcg
security-tracker.debian.org/tracker/CVE-2022-30256
ubuntu.com/security/CVE-2022-30256
ubuntu.com/security/notices/USN-6271-1
cve.org/CVERecord?id=CVE-2022-30256
ubuntu.com/security/CVE-2023-31137