constantoine/totp-rs · Security
Observable Timing Discrepancy in totp-rs
- GHSA ID
- GHSA-8vxv-2g8p-2249
- CVE ID
- CVE-2022-29185
- Severity
- medium
- Published
- Updated
- CVSS
- 4.2 · CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N
- CVSS v3
- 4.2 · CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N
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]
CWEs
- CWE-203 · Observable Discrepancy
- CWE-208 · Observable Timing Discrepancy
References
- https://github.com/constantoine/totp-rs/security/advisories/GHSA-8vxv-2g8p-2249 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2022-29185 ↗
- https://github.com/constantoine/totp-rs/issues/13 ↗
- https://github.com/constantoine/totp-rs/releases/tag/v1.1.0 ↗
- https://rustsec.org/advisories/RUSTSEC-2022-0018.html ↗
- https://github.com/constantoine/totp-rs/commit/1f1e1a6fe722deb1656f483b1367ea4be978db5b ↗
- https://github.com/constantoine/totp-rs/compare/v1.0...v1.1.0 ↗
- https://github.com/advisories/GHSA-8vxv-2g8p-2249 ↗