Description
Russh is a Rust SSH client and server library. Prior to 0.62.6, the USERAUTH_REQUEST path reached from server::run_stream in russh/src/server/encrypted.rs increments self.common.auth_attempts but never compares it with server::Config.max_auth_attempts. An unauthenticated remote client can continue submitting authentication requests on one connection beyond the configured cap, bypassing the deployment's attempt-limiting policy and increasing online guessing opportunity and backend authentication workload. This issue is fixed in version 0.62.6.
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Remediation
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References
History
Tue, 29 Sep 2026 18:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Russh is a Rust SSH client and server library. Prior to 0.62.6, the USERAUTH_REQUEST path reached from server::run_stream in russh/src/server/encrypted.rs increments self.common.auth_attempts but never compares it with server::Config.max_auth_attempts. An unauthenticated remote client can continue submitting authentication requests on one connection beyond the configured cap, bypassing the deployment's attempt-limiting policy and increasing online guessing opportunity and backend authentication workload. This issue is fixed in version 0.62.6. | |
| Title | Russh: Configured server auth-attempt cap is not enforced in the USERAUTH_REQUEST runtime path | |
| Weaknesses | CWE-307 | |
| References |
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| Metrics |
cvssV3_1
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Subscriptions
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-09-29T18:31:32.393Z
Reserved: 2026-09-29T17:25:25.265Z
Link: CVE-2026-102825
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Status : Deferred
Published: 2026-09-29T19:17:24.713
Modified: 2026-09-29T19:17:24.847
Link: CVE-2026-102825
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OpenCVE Enrichment
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Weaknesses
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CWE-307
Improper Restriction of Excessive Authentication Attempts