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GoogleOSV:GHSA-92VM-MXJF-JQF3HistoryNov 10, 2021 - 8:41 p.m.
Improper Verification of Cryptographic Signature in starkbank-ecdsa
2021-11-1020:41:39
Google
osv.dev
5
0.003 Low
EPSS
Percentile
71.3%
The verify function in the Stark Bank Python ECDSA library (starkbank-ecdsa) 2.0.0 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.
References
github.com/starkbank/ecdsa-python
github.com/starkbank/ecdsa-python/commit/d136170666e9510eb63c2572551805807bd4c17f
github.com/starkbank/ecdsa-python/releases/tag/v2.0.1
nvd.nist.gov/vuln/detail/CVE-2021-43572
research.nccgroup.com/2021/11/08/technical-advisory-arbitrary-signature-forgery-in-stark-bank-ecdsa-libraries
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