Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS03ZzlqLWc1amctM3Z2M84AA42k

Unauthenticated Nonce Increment in snow

Impact

There was a logic bug where unauthenticated payloads could still cause a nonce increment in snow's internal state. For an attacker with the ability to inject packets into the channel Noise is talking over, this allows a denial-of-service type attack which could prevent communication as it causes the sending and receiving side to be expecting different nonce values than would arrive.

Note that this only affects those who are using the stateful TransportState, not those using StatelessTransportState.

Patches

This has been patched in version 0.9.5, and all users are recommended to update.

References

There will be a more formal report of this in the near future.

Permalink: https://github.com/advisories/GHSA-7g9j-g5jg-3vv3
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS03ZzlqLWc1amctM3Z2M84AA42k
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: 10 months ago
Updated: 10 months ago

Identifiers: GHSA-7g9j-g5jg-3vv3
References:

• https://github.com/mcginty/snow/security/advisories/GHSA-7g9j-g5jg-3vv3
• https://github.com/mcginty/snow/commit/12e8ae55547ae297d5f70599e5c884ea891303eb
• https://rustsec.org/advisories/RUSTSEC-2024-0011.html
• https://github.com/advisories/GHSA-7g9j-g5jg-3vv3

Repository: https://github.com/mcginty/snow
Blast Radius: 0.0

Affected Packages