Headline
CVE-2022-29185
totp-rs is a Rust library that permits the creation of 2FA authentification tokens per time-based one-time password (TOTP). Prior to version 1.1.0, token comparison was not constant time, and could theorically be used to guess value of an TOTP token, and thus reuse it in the same time window. The attacker would have to know the password beforehand nonetheless. Starting with patched version 1.1.0, the library uses constant-time comparison. There are currently no known workarounds.
Observable Timing Discrepancy in totp-rs
Package
cargo totp-rs (Rust )
Description
Impact
Token comparison was not constant time, and could theorically be used to guess value of an TOTP token, and thus reuse it in the same time window. The attacker would have to know the password beforehand nonetheless.
Patches
Library now used constant-time comparison.
Workarounds
No.
For more information
If you have any questions or comments about this advisory:
- Open an issue in totp-rs
- Email us at [email protected]
Related news
### Impact Token comparison was not constant time, and could theorically be used to guess value of an TOTP token, and thus reuse it in the same time window. The attacker would have to know the password beforehand nonetheless. ### Patches Library now used constant-time comparison. ### Workarounds No. ### For more information If you have any questions or comments about this advisory: * Open an issue in [totp-rs](https://github.com/constantoine/totp-rs) * Email us at [[email protected]](mailto:[email protected])