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Vulnerability DatabaseCVE-2021-43570
CVE-2021-43570:
Java vulnerability analysis and mitigation
Overview
The verify function in the Stark Bank Java ECDSA library (ecdsa-java) version 1.0.0 contains a critical security vulnerability (CVE-2021-43570) that fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages (NVD). The vulnerability was discovered and disclosed in November 2021.
Technical details
The vulnerability has been assigned a CVSS v3.1 base score of 9.8 (CRITICAL) with vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. The issue stems from improper verification of cryptographic signatures (CWE-347) in the verify function, which does not validate that the signature components are non-zero (NVD).
Impact
This vulnerability allows attackers to forge signatures on arbitrary messages, effectively bypassing the cryptographic signature verification. This compromises the integrity and authenticity of any messages or transactions that rely on this ECDSA implementation for verification (NVD).
Mitigation and workarounds
The vulnerability has been fixed in version 1.0.1 of the ecdsa-java library. Users should upgrade to this patched version to address the security issue (Stark Bank Release).
Additional resources
Source: This report was generated using AI
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