CVE-2021-42071 Explained : Impact and Mitigation
Learn about CVE-2021-42071 impacting Visual Tools DVR VX16 4.2.28.0. Discover the vulnerability allowing remote command execution via HTTP headers and how to secure affected systems.
Visual Tools DVR VX16 4.2.28.0 allows remote command execution via HTTP header injection.
Understanding CVE-2021-42071
An overview of the security vulnerability in Visual Tools DVR VX16 4.2.28.0.
What is CVE-2021-42071?
In Visual Tools DVR VX16 4.2.28.0, an unauthenticated attacker can execute commands remotely by exploiting shell metacharacters in the User-Agent HTTP header of cgi-bin/slogin/login.py.
The Impact of CVE-2021-42071
- Allows unauthenticated attackers to achieve remote command execution
- Potential for significant security breaches and unauthorized system access
Technical Details of CVE-2021-42071
Insight into the technical aspects of the vulnerability.
Vulnerability Description
The vulnerability in Visual Tools DVR VX16 4.2.28.0 enables attackers to execute commands remotely through HTTP header manipulation.
Affected Systems and Versions
- Product: Visual Tools DVR VX16 4.2.28.0
- Version: All versions are affected
Exploitation Mechanism
- Attackers inject shell metacharacters into the User-Agent HTTP header
- This manipulation allows the execution of unauthorized commands remotely
Mitigation and Prevention
Measures to mitigate the risks posed by CVE-2021-42071.
Immediate Steps to Take
- Implement security patches or updates provided by Visual Tools
- Restrict access to the vulnerable system and closely monitor network traffic
Long-Term Security Practices
- Conduct regular security assessments and penetration testing
- Educate users on secure practices and awareness regarding HTTP header security
Patching and Updates
- Apply security patches released by Visual Tools promptly to fix the vulnerability