CVE-2020-5735 : What You Need to Know

Amcrest cameras and NVR are vulnerable to a stack-based buffer overflow over port 37777. An authenticated remote attacker can abuse this issue to crash the device and possibly execute arbitrary code.

Understanding CVE-2020-5735

Amcrest cameras and NVR are susceptible to a critical security vulnerability that could allow remote attackers to execute arbitrary code.

What is CVE-2020-5735?

CVE-2020-5735 is a stack-based buffer overflow vulnerability affecting Amcrest cameras and NVR systems, potentially leading to device crashes and unauthorized code execution.

The Impact of CVE-2020-5735

The exploitation of this vulnerability could result in severe consequences, including device crashes and the execution of arbitrary code by remote attackers.

Technical Details of CVE-2020-5735

Amcrest cameras and NVR systems are at risk due to a specific vulnerability that allows for unauthorized code execution.

Vulnerability Description

The vulnerability is a stack-based buffer overflow that occurs over port 37777, enabling authenticated remote attackers to crash the device and potentially run arbitrary code.

Affected Systems and Versions

Product: Amcrest
Vulnerable Versions:
before 2.623.00AC004.0.R.200316
2.420.AC00.18.R.20200217
2.800.00AC000.0.R.200330
2.800.0000000.6.R.200314.bin
2.622.00AC000.0.R.200320.bin
4.000.00AC000.0.R.200218

Exploitation Mechanism

The vulnerability can be exploited by authenticated remote attackers over port 37777 to trigger a stack-based buffer overflow, leading to device crashes and potential code execution.

Mitigation and Prevention

Steps to address and prevent the CVE-2020-5735 vulnerability.

Immediate Steps to Take

Apply vendor-supplied patches promptly.
Restrict network access to vulnerable devices.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update firmware and software.
Implement strong authentication mechanisms.
Conduct regular security assessments and audits.

Patching and Updates

Install the latest firmware updates provided by Amcrest to mitigate the vulnerability effectively.