#VU55288 Security features bypass in wolfSSL
Published: July 25, 2021
Vulnerability identifier: #VU55288
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-254
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
wolfSSL
wolfSSL
Software vendor:
wolfSSL
wolfSSL
Description
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to improper validation of OCSP checks, when processing responses for a certificate with no relation to the chain in question and that response contains the NoCheck extension which effectively disables ALL verification of that one cert. A remote attacker can bypass implemented OCSP checks and gain unauthorized access to the system that relies on OCSP verification.
Remediation
Install updates from vendor's website.