DNS Cache Poisoning Vulnerability in Technitium DNS Server
CVE-2021-43105

4.3MEDIUM

Key Information:

Vendor

Technitium

Status
Dns Server
Vendor
CVE Published:
28 March 2022

What is CVE-2021-43105?

A flaw in the bailiwick checking function of Technitium DNS Server versions up to v7.0 allows malicious users to inject NS records of any domain into the server's cache. This vulnerability can result in DNS cache poisoning attacks, enabling attackers to redirect users to malicious sites by manipulating DNS responses. The impact of this vulnerability spans the ability to compromise domain name resolution for affected users, making it critical for system administrators to apply necessary patches and harden their DNS configurations.

References

https://github.com/TechnitiumSoftware/DnsServer/blob/mast...
x_refsource_MISC

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.