GitHub_MVULNRICHMENT:CVE-2024-43410CVE-2024-43410 Russh has an OOM Denial of Service due to allocation of untrusted amount
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
9.5%
SSVC
Exploitation
poc
Automatable
yes
Technical Impact
partial
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.
ADP Affected
[
{
"cpes": [
"cpe:2.3:a:russh_project:russh:*:*:*:*:*:rust:*:*"
],
"vendor": "russh_project",
"product": "russh",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "0.44.1",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
}
]Related
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
9.5%
SSVC
Exploitation
poc
Automatable
yes
Technical Impact
partial