CVE-2024-23342High· 7.4▾ TwilightMinerva timing attack on P-256 in python-ecdsa
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 40.7 · likelihood 0.2 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
1.0%
1.0% → 1.0%
Last analysed / modified upstream
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.
ecdsaRefer to the advisory for the patched release.
Connected by shared product, vendor, weakness, or advisory.