CVE-2018-6940 : What You Need to Know
Learn about CVE-2018-6940, a Cross-Site Scripting (XSS) vulnerability in NAT32 v2.2 Build 22284 that enables Remote Code Execution. Find mitigation steps and long-term security practices.
NAT32 v2.2 Build 22284 devices contain a Cross-Site Scripting (XSS) vulnerability in the HTTPD component, specifically in the /shell?cmd= parameter. This vulnerability, when combined with Cross-Site Request Forgery (CSRF), can be exploited to achieve Remote Code Execution.
Understanding CVE-2018-6940
This CVE entry describes a security vulnerability in NAT32 v2.2 Build 22284 that allows for Remote Code Execution through a combination of XSS and CSRF.
What is CVE-2018-6940?
CVE-2018-6940 is a Cross-Site Scripting (XSS) vulnerability in NAT32 v2.2 Build 22284 that, when exploited with Cross-Site Request Forgery (CSRF), enables Remote Code Execution.
The Impact of CVE-2018-6940
The vulnerability in NAT32 v2.2 Build 22284 can lead to Remote Code Execution, allowing attackers to execute arbitrary code on affected devices.
Technical Details of CVE-2018-6940
This section provides detailed technical information about the vulnerability.
Vulnerability Description
A Cross-Site Scripting (XSS) issue exists in the HTTPD component of NAT32 v2.2 Build 22284 devices, which can be exploited for Remote Code Execution when combined with CSRF.
Affected Systems and Versions
- Product: NAT32 v2.2 Build 22284
- Vendor: N/A
- Version: N/A
Exploitation Mechanism
The vulnerability is exploited through the /shell?cmd= parameter in the HTTPD component, leveraging XSS and CSRF to achieve Remote Code Execution.
Mitigation and Prevention
Protecting systems from CVE-2018-6940 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Disable or restrict access to the vulnerable component /shell?cmd=
- Implement input validation and output encoding to prevent XSS attacks
- Use anti-CSRF tokens to mitigate Cross-Site Request Forgery
Long-Term Security Practices
- Regular security assessments and code reviews
- Stay informed about security updates and patches
- Educate users and developers about secure coding practices
Patching and Updates
- Apply patches and updates provided by the vendor to address the vulnerability