CVE-2020-29016 Explained : Impact and Mitigation
Learn about CVE-2020-29016, a critical stack-based buffer overflow vulnerability in Fortinet FortiWeb products, allowing remote attackers to execute arbitrary code.
A stack-based buffer overflow vulnerability in FortiWeb 6.3.0 through 6.3.5 and versions before 6.2.4 may allow remote attackers to execute arbitrary code.
Understanding CVE-2020-29016
This CVE identifies a critical vulnerability in Fortinet FortiWeb products that could be exploited by attackers to execute unauthorized code or commands.
What is CVE-2020-29016?
A stack-based buffer overflow vulnerability in FortiWeb 6.3.0 through 6.3.5 and versions before 6.2.4 allows unauthenticated remote attackers to overwrite the stack's content and potentially execute arbitrary code by sending a specially crafted request.
The Impact of CVE-2020-29016
The vulnerability could lead to remote code execution, enabling attackers to take control of affected systems, compromise data, and disrupt operations.
Technical Details of CVE-2020-29016
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability is a stack-based buffer overflow in FortiWeb 6.3.0 through 6.3.5 and versions before 6.2.4, triggered by sending a crafted request with a large certname.
Affected Systems and Versions
- Product: Fortinet FortiWeb
- Vendor: Fortinet
- Versions Affected: FortiWeb 6.3.0 through 6.3.5 and versions before 6.2.4
Exploitation Mechanism
Attackers can exploit this vulnerability remotely by sending a specially crafted request, potentially leading to arbitrary code execution.
Mitigation and Prevention
Protecting systems from CVE-2020-29016 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor-supplied patches or updates promptly.
- Implement network security measures to restrict access to vulnerable systems.
- Monitor network traffic for any signs of exploitation.
Long-Term Security Practices
- Regularly update and patch all software and systems.
- Conduct security assessments and penetration testing to identify vulnerabilities.
- Educate users on safe computing practices and awareness of social engineering tactics.
Patching and Updates
Ensure that Fortinet FortiWeb products are updated to versions that address the vulnerability to prevent exploitation.