CVE-2022-35922

 

Published at: - 02-08-2022 12:15

Last modified: - 26-10-2022 08:06

Total changes: - 5

Description

Rust-WebSocket is a WebSocket (RFC6455) library written in Rust. In versions prior to 0.26.5 untrusted websocket connections can cause an out-of-memory (OOM) process abort in a client or a server. The root cause of the issue is during dataframe parsing. Affected versions would allocate a buffer based on the declared dataframe size, which may come from an untrusted source. When `Vec::with_capacity` fails to allocate, the default Rust allocator will abort the current process, killing all threads. This affects only sync (non-Tokio) implementation. Async version also does not limit memory, but does not use `with_capacity`, so DoS can happen only when bytes for oversized dataframe or message actually got delivered by the attacker. The crashes are fixed in version 0.26.5 by imposing default dataframe size limits. Affected users are advised to update to this version. Users unable to upgrade are advised to filter websocket traffic externally or to only accept trusted traffic.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://github.com/websockets-rs/rust-websocket/commit/cbf6e9983e839d2ecad86de8cd1b3f20ed43390b
• https://github.com/websockets-rs/rust-websocket/security/advisories/GHSA-qrjv-rf5q-qpxc
• FEDORA-2022-163bcf190f-Mailing List, Third Party Advisory
• FEDORA-2022-dfa24fa7d4-Mailing List, Third Party Advisory

 

Keywords

NVD

 

CVE-2022-35922

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures