#VU64732 Improper Verification of Cryptographic Signature in ecdsa-dotnet - CVE-2021-43569

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Main Vulnerability Database Vulnerabilities #VU64732

#VU64732 Improper Verification of Cryptographic Signature in ecdsa-dotnet - CVE-2021-43569

Published: June 28, 2022


Vulnerability identifier: #VU64732
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-43569
CWE-ID: CWE-347
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
ecdsa-dotnet
Software vendor:
STARK BANK

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to verify function in the Stark Bank .NET ECDSA library (ecdsa-dotnet) fails to check that the signature is non-zero. A remote unauthenticated attacker can forge signatures on arbitrary messages to execute arbitrary code on the target system.


Remediation

Install updates from vendor's website.

External links