CVE-2023-49092
Due to a non-constant-time implementation, information about the private key is leaked through timing information which is observable over the network.
Does this matter?
Lower severity and a low EPSS score (0.61%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.61% probability · 47th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-385, CWE-203
- Affected
- rustcrypto/rsa
- Source
- security-advisories@github.com
References
- https://github.com/RustCrypto/RSA/issues/19#issuecomment-1822995643Issue Tracking
- https://github.com/RustCrypto/RSA/security/advisories/GHSA-c38w-74pg-36hrVendor Advisory
- https://github.com/RustCrypto/RSA/issues/19#issuecomment-1822995643Issue Tracking
- https://github.com/RustCrypto/RSA/security/advisories/GHSA-c38w-74pg-36hrVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.