knot-resolver: Knot Resolver before 5.1.1 allows traffic amplification via a crafted DNS answer from an attacker-controlled server,...
CVE-2020-12667 is fixed in 2 products on 1 platform, first by knot-resolver 3.2.1-3ubuntu2.2, released May 19, 2020. It is not reported as exploited. Patch Radar priority: Routine.
Knot Resolver before 5.1.1 allows traffic amplification via a crafted DNS answer from an attacker-controlled server, aka an "NXNSAttack" issue. This is triggered by random subdomains in the NSDNAME in NS records.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| knot-resolver · Ubuntu 20.04 LTS (focal) | 3.2.1-3ubuntu2.2 | knot-resolver 3.2.1-3ubuntu2.2 | May 19, 2020 |
| knot-resolver-module-http · Ubuntu 20.04 LTS (focal) | 3.2.1-3ubuntu2.2 | knot-resolver-module-http 3.2.1-3ubuntu2.2 | May 19, 2020 |
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