Unauthenticated Nonce Increment in snow
Exact source revision recorded 24 Oct 2026 13:19:54 UTC. It does not establish the source's current position. Latest evidence.
osv · GHSA-7g9j-g5jg-3vv3
Published### 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.
- Source published
- 24 Jan 2024 20:53:48 UTC
- Source modified
- 28 Jul 2025 16:27:08 UTC
- Observed here
- 24 Oct 2026 13:19:54 UTC
- Source terms
- GitHub Advisory Database · CC-BY-4.0
Original source record · Cite this exact observation · Complete original publisher JSON
This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.
CVSS_V3 · CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
Publisher rating · LOW