Vulnerability identifier: #VU64732
Vulnerability risk: High
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-347
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
ecdsa-dotnet
Universal components / Libraries /
Libraries used by multiple products
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.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
ecdsa-dotnet: 1.3.1
External links
http://research.nccgroup.com/2021/11/08/technical-advisory-arbitrary-signature-forgery-in-stark-bank-ecdsa-libraries/
http://github.com/advisories/GHSA-j3jw-j2j8-2wv9
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.