What is GHSA-j3jw-j2j8-2wv9?

GHSA-j3jw-j2j8-2wv9 is a security advisory published by GitHub Security Advisories with Critical severity. Improper Verification of Cryptographic Signature in starkbank-ecdsa

Which CVE IDs does GHSA-j3jw-j2j8-2wv9 cover?

GHSA-j3jw-j2j8-2wv9 covers the following CVE IDs: CVE-2021-43569. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-j3jw-j2j8-2wv9?

GHSA-j3jw-j2j8-2wv9 has a CVSS v3 base score of 9.8, published by GitHub Security Advisories.

Which products are affected by GHSA-j3jw-j2j8-2wv9?

GHSA-j3jw-j2j8-2wv9 affects 1 product, including: nuget/starkbank-ecdsa:\u003c 1.3.2.

GHSA-j3jw-j2j8-2wv9CriticalCVSS 9.8

Improper Verification of Cryptographic Signature in starkbank-ecdsa

Vendor

GitHub Security Advisories

Published

November 10, 2021

Last Modified

February 1, 2023

🔗 CVE IDs covered (1)

CVE-2021-43569 →

📋 Description

The verify function in the Stark Bank .NET ECDSA library (ecdsa-dotnet) 1.3.1 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.

🎯 Affected products1

nuget/starkbank-ecdsa:< 1.3.2

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2021-43569
https://github.com/starkbank/ecdsa-dotnet/releases/tag/v1.3.2
https://research.nccgroup.com/2021/11/08/technical-advisory-arbitrary-signature-forgery-in-stark-bank-ecdsa-libraries/
https://github.com/advisories/GHSA-j3jw-j2j8-2wv9