Vulnerability RUSTSEC-2023-0071

Medium Risk

2 years ago

Marvin Attack: potential key recovery through timing sidechannels

>=0.0.0-0 <0.10.0

Summary

Marvin Attack: potential key recovery through timing sidechannels

Details

Impact

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.

Patches

The rsa v0.10 series includes a migration to crypto-bigint and constant-time mitigations recommended in draft-irtf-cfrg-rsa-guidance. Upgrading to this release should resolve all known constant-time issues.

References

This vulnerability was discovered as part of the " Marvin Attack", which revealed several implementations of RSA including OpenSSL had not properly mitigated timing sidechannel attacks.