CVE-2024-43410

HIGH EPSS 55.5%
Published Aug 21, 20241y ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Aug 21, 2024 1y ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
55.5% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-770

Affected Products 2

VendorProductVersionRange
russh_projectrussh* <0.44.1
warpgate_projectwarpgate* <0.10.2

References 2

  • github.com https://github.com/Eugeny/russh/commit/f660ea3f64b86d11d19e33076012069f02431e55
    Patch
  • github.com https://github.com/Eugeny/russh/security/advisories/GHSA-vgvv-x7xg-6cqg
    ExploitVendor Advisory

Remediation

  • github.com https://github.com/Eugeny/russh/commit/f660ea3f64b86d11d19e33076012069f02431e55
    Patch