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GHSA-6cr6-fmvc-vw2p

Noise vulnerable to denial of service

Source: GitHub Advisory Database (reviewed) High CVE-2021-4239

Packages

EcosystemPackageAffectedFixed in
Go github.com/flynn/noise < 1.0.0 1.0.0

Details

As written in the advisory (Markdown source, shown as plain text).

Noise is a Go implementation of the Noise Protocol Framework. The Noise protocol implementation suffers from weakened cryptographic security after encrypting 2^64 messages, and a potential denial of service attack. After 2^64 (~18.4 quintillion) messages are encrypted with the Encrypt function, the nonce counter will wrap around, causing multiple messages to be encrypted with the same key and nonce. In a separate issue, the Decrypt function increments the nonce state even when it fails to decrypt a message. If an attacker can provide an invalid input to the Decrypt function, this will cause the nonce state to desynchronize between the peers, resulting in a failure to encrypt all subsequent messages.

References

External links from the advisory. They lead to third-party sites.