CVE-2026-73489
MEDIUM
4,3
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: low
Description
AI Translation Available
Russh is a Rust SSH client & server library. Prior to 0.62.4, an authenticated SSH client can cause a denial of service by sending a pty-req channel request with more than 130 terminal-mode records. The parser in russh/src/server/encrypted.rs stores terminal modes in a fixed 130-entry [(Pty::TTY_OP_END, 0); 130] array but continues increasing the mode count, then constructs an out-of-bounds slice and panics before the application pty_request handler runs. The panic terminates the server session task without causing memory corruption. This issue is fixed in version 0.62.4.
129
Improper Validation of Array Index
DraftCommon Consequences
Security Scopes Affected:
Integrity
Availability
Confidentiality
Potential Impacts:
Dos: Crash, Exit, Or Restart
Modify Memory
Read Memory
Execute Unauthorized Code Or Commands
Applicable Platforms
Languages:
C, C++, Not Language-Specific
https://github.com/Eugeny/russh/commit/8912512371820167a12a0a638bd666856ce458ad
https://github.com/Eugeny/russh/releases/tag/v0.62.4
https://github.com/Eugeny/russh/security/advisories/GHSA-cqjc-rmpq-xprq