CVE-2023-49092

RustCrypto/RSA vulnerable to a Marvin Attack via key recovery through timing sidechannels

Published Nov 28, 2023 CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

RustCrypto

RSA

affected

Version	Status	Constraints
`<= 0.9.5`	affected	—

Configuration 1 [-]

cpe:2.3:a:rustcrypto:rsa:*:*:*:*:*:rust:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

Source	ID	Title
EUVD	EUVD-2023-2946	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.
Github GHSA	GHSA-c38w-74pg-36hr	Marvin Attack: potential key recovery through timing sidechannels