PT-2022-11786 · Technitium · Technitium Dns Server

Xiang Li · Published 2022-03-28 · Updated 2023-08-15 · CVE-2021-43105

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Technitium DNS Server versions <= 7.0

Description A vulnerability in the bailiwick checking function exists that allows specific malicious users to inject NS records of any domain into the cache and conduct a DNS cache poisoning attack.

Recommendations For versions <= 7.0, update to a version that fixes the bailiwick checking function issue to prevent DNS cache poisoning attacks. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2021-43105

Affected Products

Technitium Dns Server

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2021-43105 · Security Note
• https://osv.dev/vulnerability/CVE-2021-43105 · Vendor Advisory
• https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md · Note
• https://t.me/cibsecurity/39693 · Telegram Post
• https://t.me/true_secator/4724 · Telegram Post
• https://twitter.com/fletch_ai/status/1691632627332047057 · Twitter Post