High severity · published Jan 13, 2023
CVE-2022-48256
Technitium DNS Server before 10.0 allows a self-CNAME denial-of-service attack in which a CNAME loop causes an answer to contain hundreds of records
7.5
CVSS
0.7%
EPSS
No
On KEV
Description
Technitium DNS Server before 10.0 allows a self-CNAME denial-of-service attack in which a CNAME loop causes an answer to contain hundreds of records.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DS
Dns Server · Technitium
before 10.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-48256
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-48256
Release Notes
https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md#version-100
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