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.

Classification

CVE ID: CVE-2023-49092

CVSS Base Severity: MEDIUM

CVSS Base Score: 5.9

Affected Products

Vendor: RustCrypto

Product: RSA

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.14% (probability of being exploited)

EPSS Percentile: 50.97% (scored less or equal to compared to others)

EPSS Date: 2025-02-03 (when was this score calculated)

References

https://github.com/RustCrypto/RSA/security/advisories/GHSA-c38w-74pg-36hr
https://github.com/RustCrypto/RSA/issues/19#issuecomment-1822995643

Timeline