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MEDIUM5.9

GHSA-hfmw-7g3m-gj6q

CoreDNS vulnerable to TuDoor Attacks

Quick fix

GHSA-hfmw-7g3m-gj6q — github.com/coredns/coredns: upgrade to the fixed version with the command below.

go get github.com/coredns/coredns@v1.11.0

Details

An issue was discovered in CoreDNS through 1.10.1. There is a vulnerability in DNS resolving software, which triggers a resolver to ignore valid responses, thus causing denial of service for normal resolution. In an exploit, the attacker could just forge a response targeting the source port of a vulnerable resolver without the need to guess the correct TXID.

Are you affected?

Enter the version of the package you're using.

Affected packages

Go/github.com/coredns/coredns
Introduced in: 0Fixed in: 1.11.0
Fixgo get github.com/coredns/coredns@v1.11.0

References