CVE-2026-102822
LOW
3,7
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: low
Description
AI Translation Available
Russh is a Rust SSH client and server library. Prior to 0.63.1, a connection configured to permit mac=none can negotiate it with a MAC-requiring CTR or CBC block cipher because the selection logic validates needs_mac() only when MAC selection fails. A remote peer can then send a packet with a decrypted length of zero, causing russh/src/cipher/mod.rs to shrink the previously read block before indexing buffer.buffer[16..], which panics and terminates the connection task. This issue is fixed in version 0.63.1.
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/security/advisories/GHSA-p8qx-h547-fjw9
https://github.com/Eugeny/russh/commit/2885385abfee279092a41d80c6cb6ac367353159
https://github.com/Eugeny/russh/releases/tag/v0.63.1
https://github.com/Eugeny/russh/security/advisories/GHSA-p8qx-h547-fjw9