Mutual Authentication Vulnerability in wolfSSL TLS 1.3 Implementation
CVE-2022-25640

7.5HIGH

Key Information:

Vendor
Wolfssl
Status
Wolfssl
Vendor
CVE Published:
24 February 2022

Badges

👾 Exploit Exists🟡 Public PoC

Summary

In versions of wolfSSL prior to 5.2.0, an issue exists within the TLS 1.3 protocol where the server may fail to enforce mutual authentication. This allows a client to bypass the requirement to submit a certificate_verify message during the handshake, resulting in potential security risks by not presenting a client certificate. This lapse can facilitate unauthorized access or man-in-the-middle attacks.

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

cve-2022-25640-exploit
Created by dim0x69

References

https://github.com/wolfSSL/wolfssl/pull/4831
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.