russh may use insecure Diffie-Hellman keys
CVE-2023-28113

5.9MEDIUM

Key Information:

Vendor

Warp-tech

Status
Russh
Vendor
CVE Published:
16 March 2023

What is CVE-2023-28113?

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 vulnerable to eavesdropping. Most other implementations reject such keys, so this is mainly an interoperability issue in such a case. This issue is fixed in versions 0.36.2 and 0.37.1

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Affected Version(s)

russh 0.34.0 < 0.34.0*

russh 0.36.2

russh 0.37.0 < 0.37.0*

References

https://github.com/warp-tech/russh/commit/d831a3716d3719d...
https://github.com/warp-tech/russh/blob/master/russh/src/...
https://github.com/warp-tech/russh/blob/master/russh/src/...

CVSS V3.1

Score:
5.9
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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