CVE-2023-49092 RustCrypto/RSA vulnerable to a Marvin Attack via key recovery through timing sidechannels
Attackers can recover private RSA keys by observing timing side channels in the RustCrypto RSA library, compromising encrypted data and authentication.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-49092?
CVE-2023-49092 is a medium-severity vulnerability in RustCrypto RSA, published on 28 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2023-49092?
5 open source packages ship an affected version, including rsa. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
rsa crates.io | All versions to 0.9.6 | None |
rsa crates.io | All versions to 0.9.6 | None |
rsa crates.io | All versions to 0.9.6 | None |
rsa crates.io | All versions to 0.9.6 | None |
rsa crates.io | From 0.0.0-0 | None |
Linux distribution packages (1)
cargo-audit-advisory-db openSUSE:Tumbleweed | All versions | 20231219-1.1 |
Products include Rustcrypto Rsa.
How do I fix CVE-2023-49092?
No fix published yet.
Is CVE-2023-49092 being exploited?
There is no known exploitation of CVE-2023-49092 in the wild and no public exploit code.
Other vulnerabilities in RustCrypto RSA
Sources
Also known as DEBIAN-CVE-2023-49092, GHSA-4grx-2x9w-596c, GHSA-c38w-74pg-36hr, MINI-2pc2-jgvp-2r86, MINI-hpx4-jmxf-w6c5, RUSTSEC-2023-0071 and 2 more.