CVE-2024-23342
Minerva timing attack on P-256 in python-ecdsa
high entropyGHSA-wj6h-64fc-37mpCVE-2024-23342
Entropy / wallet impact
ecdsa: python-ecdsa has been found to be subject to a Minerva timing attack on the P-256 curve.
Description
python-ecdsa has been found to be subject to a Minerva timing attack on the P-256 curve. Using the ecdsa.SigningKey.sign_digest() API function and timing signatures an attacker can leak the internal nonce which may allow for private key discovery. Both ECDSA signatures, key generation, and ECDH operations are affected. ECDSA signature verification is unaffected. The python-ecdsa project considers side channel attacks out of scope for the project and there is no planned fix.
Affected
| Kind | Name | Ecosystem | Versions |
|---|---|---|---|
| package | ecdsa | pip | >= 0 |
| package | ecdsa | PyPI | introduced=0 |
CWE
Primary sources
- https://github.com/advisories/GHSA-wj6h-64fc-37mp (ghsa)
- https://github.com/tlsfuzzer/python-ecdsa/security/advisories/GHSA-wj6h-64fc-37mp (ghsa)
- https://github.com/tlsfuzzer/python-ecdsa/blob/master/SECURITY.md (ghsa)
- https://nvd.nist.gov/vuln/detail/CVE-2024-23342 (ghsa)
- https://minerva.crocs.fi.muni.cz (ghsa)
- https://securitypitfalls.wordpress.com/2018/08/03/constant-time-compare-in-python (ghsa)
- https://github.com/tlsfuzzer/python-ecdsa (osv)
- https://pypi.org/project/ecdsa (osv)