Products
Russh
- 0.44.1
Source
security-advisories@github.com
Tags
CVE-2024-43410 details
Last Modified : Aug. 21, 2024, 5:25 p.m.
Description
Russh is a Rust SSH client & server library. Allocating an untrusted amount of memory allows any unauthenticated user to OOM a russh server. An SSH packet consists of a 4-byte big-endian length, followed by a byte stream of this length. After parsing and potentially decrypting the 4-byte length, russh allocates enough memory for this bytestream, as a performance optimization to avoid reallocations later. But this length is entirely untrusted and can be set to any value by the client, causing this much memory to be allocated, which will cause the process to OOM within a few such requests. This vulnerability is fixed in 0.44.1.
CVSS Score
| 1 | 2 | 3 | 4 | 5 | 6 | 7.5 | 8 | 9 | 10 |
|---|
Weakness
| Weakness | Name | Description |
|---|---|---|
| CWE-770 | Allocation of Resources Without Limits or Throttling | The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. |
CVSS Data
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Base Score
7.5
Exploitability Score
3.9
Impact Score
3.6
Base Severity
HIGH
Vector String : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
| URL | Source |
|---|---|
| https://github.com/Eugeny/russh/commit/f660ea3f64b86d11d19e33076012069f02431e55 | security-advisories@github.com |
| https://github.com/Eugeny/russh/security/advisories/GHSA-vgvv-x7xg-6cqg | security-advisories@github.com |