Security restrictoins bypass in wolfssl



Published: 2021-07-25
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID N/A
CWE-ID CWE-254
Exploitation vector Network
Public exploit N/A
Vulnerable software
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wolfSSL
Universal components / Libraries / Libraries used by multiple products

Vendor wolfSSL

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Security features bypass

EUVDB-ID: #VU55288

Risk: Medium

CVSSv3.1:

CVE-ID: N/A

CWE-ID: CWE-254 - Security Features

Exploit availability: No

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

wolfSSL: 4.0 - 4.8.0


CPE2.3 External links

http://github.com/wolfSSL/wolfssl/releases/tag/v4.8.1-stable

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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