CVE-2020-29019 : Exploit Details and Defense Strategies
Learn about CVE-2020-29019, a stack-based buffer overflow vulnerability in FortiWeb 6.3.0 through 6.3.7 and versions before 6.2.4, allowing remote attackers to crash the httpd daemon thread.
A stack-based buffer overflow vulnerability in FortiWeb 6.3.0 through 6.3.7 and versions before 6.2.4 may allow a remote, unauthenticated attacker to crash the httpd daemon thread by sending a request with a crafted cookie header.
Understanding CVE-2020-29019
This CVE identifies a denial of service vulnerability in Fortinet FortiWeb products.
What is CVE-2020-29019?
The vulnerability in FortiWeb versions 6.3.0 through 6.3.7 and versions before 6.2.4 can be exploited by a remote attacker to crash the httpd daemon thread.
The Impact of CVE-2020-29019
The vulnerability could lead to a denial of service, disrupting the availability of the affected FortiWeb systems.
Technical Details of CVE-2020-29019
The following technical details provide insight into the vulnerability.
Vulnerability Description
- Type: Stack-based buffer overflow
- Affected Versions: FortiWeb 6.3.0 through 6.3.7 and versions before 6.2.4
- Attack Vector: Remote
- Authentication: Unauthenticated
- Impact: Denial of service
Affected Systems and Versions
- Product: Fortinet FortiWeb
- Versions: FortiWeb 6.3.0 through 6.3.7 and versions before 6.2.4
Exploitation Mechanism
The vulnerability can be exploited by sending a specially crafted request with a malicious cookie header, causing a stack-based buffer overflow.
Mitigation and Prevention
Protecting systems from CVE-2020-29019 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor-supplied patches or updates promptly.
- Monitor network traffic for any suspicious activity.
- Implement network segmentation to limit the impact of potential attacks.
Long-Term Security Practices
- Regularly update and patch all software and firmware.
- Conduct security assessments and penetration testing to identify vulnerabilities.
- Educate users and administrators on secure coding practices and threat awareness.
Patching and Updates
- Fortinet has released patches to address the vulnerability. Ensure all FortiWeb instances are updated to versions that include the necessary security fixes.