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CVE-2024-43410— Russh has an OOM Denial of Service due to allocation of untrusted amount

Quick assessment

Affected
Eugeny russh
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Russh是Eugene个人开发者的一个 Rust SSH 客户端和服务器端库。 Russh 存在安全漏洞，该漏洞源于分配不受信任的内存量。

CVSS 7.5 · High EPSS 0.91% · P59

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2024-43410

Vulnerability Information
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Vulnerability Title
Russh has an OOM Denial of Service due to allocation of untrusted amount
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
Russh 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Russh是Eugene个人开发者的一个 Rust SSH 客户端和服务器端库。 Russh 存在安全漏洞，该漏洞源于分配不受信任的内存量。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Eugeny russh < 0.44.1 -

II. Public POCs for CVE-2024-43410

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7997 chars
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III. Intelligence Information for CVE-2024-43410

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Patches & Fixes for CVE-2024-43410 (1)

Vendor Advisories for CVE-2024-43410 (1)

IV. Related Vulnerabilities

Same product: russh
Same vendor: Eugeny
Same weakness: CWE-770

V. Comments for CVE-2024-43410

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