CVE-2021-43572

Description

The verify function in the Stark Bank Python ECDSA library (aka starkbank-escada or ecdsa-python) before 2.0.1 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.

Risk Information

Base Score

9.8

MODERATE

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score

Exploitation Probability

0.241

Associated Vulnerability

Vulnerability	OS Platform
Vulnerabilities CVE-2021-43572 are fixed in Python-starkbank-ecdsa 2.0.1	Windows
Vulnerabilities CVE-2021-43572 are fixed in Nuget - starkbank-ecdsa 2.0.1	Windows
Vulnerabilities CVE-2021-43572 are fixed in Python-starkbank-ecdsa for linux 2.0.1	Linux
Vulnerabilities CVE-2021-43572 are fixed in Nuget - starkbank-ecdsa for Linux 2.0.1	Linux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234