CVE-2020-12105 : What You Need to Know

OpenConnect through 8.08 mishandles negative return values from X509_check_ function calls, potentially enabling man-in-the-middle attacks.

Understanding CVE-2020-12105

OpenConnect through version 8.08 is susceptible to a vulnerability that could be exploited by attackers for man-in-the-middle attacks.

What is CVE-2020-12105?

This CVE refers to a flaw in OpenConnect versions up to 8.08 that mishandles negative return values from X509_check_ function calls, potentially aiding attackers in executing man-in-the-middle attacks.

The Impact of CVE-2020-12105

The vulnerability could allow threat actors to intercept communication between users and servers, leading to potential data theft or manipulation.

Technical Details of CVE-2020-12105

OpenConnect through version 8.08 is affected by a specific vulnerability.

Vulnerability Description

The issue arises from the mishandling of negative return values from X509_check_ function calls, which could be exploited by attackers for man-in-the-middle attacks.

Affected Systems and Versions

Product: OpenConnect
Vendor: N/A
Versions affected: Up to 8.08

Exploitation Mechanism

Attackers can exploit this vulnerability to intercept and manipulate data exchanged between users and servers, potentially leading to unauthorized access or data leakage.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2020-12105.

Immediate Steps to Take

Update OpenConnect to the latest version to patch the vulnerability.
Monitor network traffic for any suspicious activities that could indicate a man-in-the-middle attack.

Long-Term Security Practices

Implement encryption protocols to secure data transmission.
Regularly update and patch software to address known vulnerabilities.

Patching and Updates

Ensure that OpenConnect is regularly updated to the latest version to prevent exploitation of this vulnerability.