CVE-2023-49092Covert Timing Channel in RSA

Severity
5.9MEDIUMNVD
EPSS
0.7%
top 27.21%
CISA KEV
Not in KEV
Exploit
No known exploits
Timeline
PublishedNov 28

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:NExploitability: 2.2 | Impact: 3.6

Affected Packages3 packages

CVEListV5rustcrypto/rsa0.9.5
crates.iorustcrypto/rsa0.9.6+1

🔴Vulnerability Details

5
OSV
CVE-2023-49092: RustCrypto/RSA is a portable RSA implementation in pure Rust2023-11-28
OSV
Marvin Attack: potential key recovery through timing sidechannels2023-11-28
OSV
Marvin Attack: potential key recovery through timing sidechannels2023-11-28
GHSA
Marvin Attack: potential key recovery through timing sidechannels2023-11-28
OSV
Marvin Attack: potential key recovery through timing sidechannels2023-11-22

📋Vendor Advisories

1
Debian
CVE-2023-49092: rust-rsa - RustCrypto/RSA is a portable RSA implementation in pure Rust. Due to a non-const...2023