adyen/adyen-python-api-library · Security
Adyen APIs Library for Python timing attack vulnerability
- GHSA ID
- GHSA-f3q4-ggfp-jv34
- Severity
- medium
- Published
- Updated
- CVSS
- 5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CVSS v3
- 5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CVSS v4
- 6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Description
Adyen has utility methods for validating notification HMAC signatures. The is_valid_hmac and is_valid_hmac_notification methods are vulnerable to a timing attack, you should compare the hash of the HMACs instead.
CWEs
- CWE-347 · Improper Verification of Cryptographic Signature
References
- https://github.com/Adyen/adyen-python-api-library/issues/168 ↗
- https://github.com/Adyen/adyen-python-api-library/pull/170 ↗
- https://github.com/Adyen/adyen-python-api-library/commit/3292133dbc00ffc4cccfb92de672a76eaa587ca5 ↗
- https://github.com/pypa/advisory-database/tree/main/vulns/adyen/PYSEC-2023-1.yaml ↗
- https://github.com/advisories/GHSA-f3q4-ggfp-jv34 ↗