CVE-2023-49092 MEDIUM

CVE-2023-49092: RustCrypto/RSA vulnerable to a Marvin Attack via key recovery through timing sidechannels

Vendor Rustcrypto
Product RSA
Weakness CWE-385
Published November 28, 2023
Last update November 27, 2024

CVSS base score

5.9/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

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

What the vulnerability does

01Description

RustCrypto/RSA is a portable RSA implementation in pure Rust. Due to a non-constant-time implementation, information about the private key is leaked through timing information which is observable over the network. An attacker may be able to use that information to recover the key. There is currently no fix available. As a workaround, avoid using the RSA crate in settings where attackers are able to observe timing information, e.g. local use on a non-compromised computer.

Key dates

02Disclosure timeline

November 28, 2023 CVE published
November 27, 2024 Record updated