CVE-2024-32650 HIGH

CVE-2024-32650: Rustls vulnerable to an infinite loop in rustls::conn::ConnectionCommon::complete_io() with proper client input

Vendor Rustls
Product rustls
Weakness CWE-835
Published April 19, 2024
Last update August 2, 2024
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Rustls is a modern TLS library written in Rust. `rustls::ConnectionCommon::complete_io` could fall into an infinite loop based on network input. When using a blocking rustls server, if a client send a `close_notify` message immediately after `client_hello`, the server's `complete_io` will get in an infinite loop. This vulnerability is fixed in 0.23.5, 0.22.4, and 0.21.11.

Key dates

02Disclosure timeline

April 19, 2024 CVE published
August 2, 2024 Record updated