Vulnerability identifier: #VU28771
Vulnerability risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/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:
p5-Crypt-Perl
Universal components / Libraries /
Software for developers
Vendor: Felipe Gasper
Description
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to improper ECDSA signature verification for the secp256r1 (prime256v1) curve, when r and s are small and when s = 1. A remote attacker can bypass signature verification process for Crypt::Perl::ECDSA and trick the victim into installing malicious code.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
p5-Crypt-Perl: 0.021 - 0.31
External links
http://github.com/FGasper/p5-Crypt-Perl/commit/f960ce75502acf7404187231a706672f8369acb2
http://github.com/FGasper/p5-Crypt-Perl/issues/14
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.