CVE-2020-3931 Explained : Impact and Mitigation

A buffer overflow vulnerability exists in the GeoVision Door Access Control Device, allowing unauthenticated remote attackers to execute arbitrary commands.

Understanding CVE-2020-3931

This CVE involves a critical buffer overflow issue in GeoVision's Door Access Control Device.

What is CVE-2020-3931?

CVE-2020-3931 is a security vulnerability in GeoVision's Door Access Control Device that enables remote attackers to execute arbitrary commands without authentication.

The Impact of CVE-2020-3931

The vulnerability has a CVSS base score of 9.8, indicating a critical severity level. It poses a high risk to confidentiality, integrity, and availability, with low attack complexity and no privileges required.

Technical Details of CVE-2020-3931

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability is a buffer overflow in GeoVision's Door Access Control Device, allowing remote attackers to execute arbitrary commands.

Affected Systems and Versions

Product: Door Access Control Device
Vendor: GeoVision
Affected Versions:
GV-AS210 (<= 2.21)
GV-AS410 (<= 2.21)
GV-AS810 (<= 2.21)
GV-GF192x (<= 1.10)
GV-AS1010 (<= 1.32)

Exploitation Mechanism

The vulnerability can be exploited remotely by an unauthenticated attacker over the network.

Mitigation and Prevention

Protecting systems from CVE-2020-3931 is crucial to maintaining security.

Immediate Steps to Take

Update affected devices to version 2.22 for GV-AS210, GV-AS410, and GV-AS810.
Update GV-GF192x to version 1.22 and GV-AS1010 to version 1.33.

Long-Term Security Practices

Regularly monitor for security updates and patches.
Implement network segmentation to limit exposure to potential attacks.
Conduct regular security assessments and penetration testing.

Patching and Updates

Ensure all devices are updated to the latest patched versions to mitigate the vulnerability.