CVE-2021-32941 Explained : Impact and Mitigation
Learn about CVE-2021-32941, a critical vulnerability in Annke Network Video Recorder devices allowing remote code execution. Find out the impact, affected systems, and mitigation steps.
Annke N48PBB (Network Video Recorder) products of version 3.4.106 build 200422 and prior are vulnerable to a stack-based buffer overflow, allowing unauthorized remote attackers to run arbitrary code with root privileges.
Understanding CVE-2021-32941
This CVE refers to a critical vulnerability found in Annke Network Video Recorder devices that could be exploited by remote attackers to execute malicious code.
What is CVE-2021-32941?
CVE-2021-32941 relates to a stack-based buffer overflow issue identified in Annke N48PBB (NVR) products with versions up to V3.4.106 build 200422. The vulnerability enables attackers to gain unauthorized access and control over the affected devices remotely.
The Impact of CVE-2021-32941
The impact of this vulnerability is rated as critical, with a CVSS base score of 9.4. It poses a high availability impact, allowing attackers to execute arbitrary code with the same privileges as the server user (root), compromising the integrity of the system.
Technical Details of CVE-2021-32941
This section outlines the specific technical aspects of the CVE.
Vulnerability Description
The vulnerability is a stack-based buffer overflow, which can be exploited remotely over the network.
Affected Systems and Versions
Annke N48PBB (NVR) products running versions up to V3.4.106 build 200422 are affected by this security flaw.
Exploitation Mechanism
Unauthorized remote attackers can exploit the vulnerability to execute arbitrary code with root privileges on the targeted devices.
Mitigation and Prevention
Protecting against and mitigating the effects of CVE-2021-32941 is crucial for system security.
Immediate Steps to Take
Immediately update the affected devices to a secure version and apply relevant patches released by the vendor.
Long-Term Security Practices
Implement network segmentation, access controls, and regularly update and patch all network-connected devices to prevent future vulnerabilities.
Patching and Updates
Frequently check for security updates and patches from Annke to address known vulnerabilities and enhance the overall security posture of the network.