CVE-2023-28113 — russh is a Rust SSH client and server library
russh is a Rust SSH client and server library. Starting in version 0.34.0 and prior to versions 0.36.2 and 0.37.1, Diffie-Hellman key validation is insufficient, which can lead to insecure shared secrets and therefore breaks confidentiality. Connections between a russh client and
Published
2023-03-16T00:00:00.000Z
Last modified
2025-02-25T14:55:51.611Z
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
01What is this vulnerability?
russh is a Rust SSH client and server library. Starting in version 0.34.0 and prior to versions 0.36.2 and 0.37.1, Diffie-Hellman key validation is insufficient, which can lead to insecure shared secrets and therefore breaks confidentiality. Connections between a russh client and server or those of a russh peer with some other misbehaving peer are most likely to be problematic. These may…
02Affected products
| Vendor | Product | Versions |
|---|
| warp-tech | russh | 0.34.0, 0.36.2, 0.37.0, 0.37.1 |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2023-03-16T00:00:00.000Z
- Last modified: 2025-02-25T14:55:51.611Z
09References
- github.com — https://github.com/warp-tech/russh/commit/d831a3716d3719dc76f091fcea9d94bd4ef97c…
- github.com — https://github.com/warp-tech/russh/blob/master/russh/src/kex/dh/groups.rs#L72-L7…
- github.com — https://github.com/warp-tech/russh/blob/master/russh/src/kex/dh/groups.rs#L78-L8…
- github.com — https://github.com/warp-tech/russh/releases/tag/v0.36.2
- github.com — https://github.com/warp-tech/russh/releases/tag/v0.37.1
- github.com — https://github.com/warp-tech/russh/security/advisories/GHSA-cqvm-j2r2-hwpg
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