RUSTSEC-2022-0066

Denial of Service from unchecked request length

Reported

October 30, 2022

Issued

November 2, 2022

Package

conduit-hyper (crates.io)

Type

Vulnerability

Categories

denial-of-service

Aliases

Details

https://github.com/conduit-rust/conduit-hyper/security/advisories/GHSA-9398-5ghf-7pr6

CVSS Score

7.5 HIGH

CVSS Details

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Patched

>=0.4.2

Unaffected

<0.2.0-alpha.3

Description

Prior to version 0.4.2, conduit-hyper did not check any limit on a request's length before calling hyper::body::to_bytes. An attacker could send a malicious request with an abnormally large Content-Length, which could lead to a panic if memory allocation failed for that request.

In version 0.4.2, conduit-hyper sets an internal limit of 128 MiB per request, otherwise returning status 400 ("Bad Request").