Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS1yMjhoLXg2aHYtMmZxM80XJQ

Improper Verification of Cryptographic Signature in starkbank-ecdsa

The verify function in the Stark Bank Java ECDSA library (ecdsa-java) 1.0.0 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.

Permalink: https://github.com/advisories/GHSA-r28h-x6hv-2fq3
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1yMjhoLXg2aHYtMmZxM80XJQ
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Critical
Classification: General
Published: over 2 years ago
Updated: over 1 year ago

CVSS Score: 9.8
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Identifiers: GHSA-r28h-x6hv-2fq3, CVE-2021-43570
References:

• https://nvd.nist.gov/vuln/detail/CVE-2021-43570
• https://github.com/starkbank/ecdsa-java/releases/tag/v1.0.1
• https://research.nccgroup.com/2021/11/08/technical-advisory-arbitrary-signature-forgery-in-stark-bank-ecdsa-libraries/
• https://github.com/starkbank/ecdsa-java/pull/16
• https://github.com/starkbank/ecdsa-java/commit/ed22e484186d6c66d3686bfe39d01bdbabf219b6
• https://github.com/advisories/GHSA-r28h-x6hv-2fq3

Repository: https://github.com/starkbank/ecdsa-java
Blast Radius: 1.0

Affected Packages