CVE-2021-43568
CRITICAL 9.8EPSS 1.1%
The verify function in the Stark Bank Elixir ECDSA library (ecdsa-elixir) 1.0.0 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.
- CVSS v3.1 NVD
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS v2.0 NVD
- 7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P - EPSS
- 1.05% chance of exploitation in the next 30 days, 64th percentile
- Published
- 2021-11-09
- Updated
- 2024-08-04
Proof-of-concept exploits (1)
Security advisories
- starkbank/ecdsa-elixir/releases/tag/v1.0.1
- https://research.nccgroup.com/2021/11/08/technical-advisory-arbitrary-signature-forgery-i…
- advisories/GHSA-xx36-6rv4-gj8r