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This repository has been archived by the owner on Jan 16, 2023. It is now read-only.

Denial of Service from unchecked request length

High
cuviper published GHSA-9398-5ghf-7pr6 Oct 30, 2022

Package

cargo conduit-hyper (Rust)

Affected versions

< 0.4.2, >= 0.2.0-alpha.3

Patched versions

0.4.2

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").

This crate is part of the implementation of Rust's crates.io, but that service is not affected due to its existing cloud infrastructure, which already drops such malicious requests. Even with the new limit in place, conduit-hyper is not recommended for production use, nor to directly serve the public Internet.

The vulnerability was discovered by Ori Hollander from the JFrog Security Research team.

Severity

High
7.5
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVE ID

CVE-2022-39294

Weaknesses

No CWEs