VulnerabilityModified
CVE-2021-43105
A vulnerability in the bailiwick checking function in Technitium DNS Server <= v7.0 exists that allows specific malicious users to inject `NS` records of any domain (even TLDs) into the cache and conduct a DNS cache poisoning attack.
MEDIUM 4.3EPSS 0.62%
Does this matter?
Lower severity and a low EPSS score (0.62%). Track it; it rarely justifies an emergency change on its own.
Description
A vulnerability in the bailiwick checking function in Technitium DNS Server <= v7.0 exists that allows specific malicious users to inject `NS` records of any domain (even TLDs) into the cache and conduct a DNS cache poisoning attack.
- CVSS 3.1
- 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 0.62% probability · 48th percentile
- CISA KEV
- Not listed
- Affected
- technitium/dns server
- Source
- cve@mitre.org
References
- https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.mdRelease Notes, Third Party Advisory
- https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.mdRelease Notes, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.