CVE-2020-23574 : Exploit Details and Defense Strategies
Learn about CVE-2020-23574, a vulnerability in Sysax Multi Server 6.90 that allows an authenticated user to trigger a buffer overflow, leading to a crash. Find out how to mitigate this issue.
Sysax Multi Server 6.90 allows an authenticated user to trigger a buffer overflow by manipulating a specific parameter during file upload, leading to a crash.
Understanding CVE-2020-23574
This CVE involves a vulnerability in Sysax Multi Server 6.90 that can be exploited by an authenticated user to cause a buffer overflow.
What is CVE-2020-23574?
When a user uploads a file in Sysax Multi Server 6.90, they can manipulate a parameter in the upload form to trigger a buffer overflow, resulting in a crash of the application.
The Impact of CVE-2020-23574
The exploitation of this vulnerability can lead to a denial of service (DoS) condition, causing the application to become unresponsive or crash.
Technical Details of CVE-2020-23574
Sysax Multi Server 6.90 is susceptible to a buffer overflow due to improper handling of user input during file upload.
Vulnerability Description
An authenticated user can modify a specific parameter in the upload form to a length of 368 bytes or more, triggering a buffer overflow and crashing the application.
Affected Systems and Versions
- System: Sysax Multi Server 6.90
- Versions: All versions of Sysax Multi Server 6.90 are affected.
Exploitation Mechanism
By manipulating the filename parameter in the upload form to exceed 368 bytes, an authenticated user can exploit the vulnerability and cause a buffer overflow.
Mitigation and Prevention
To address CVE-2020-23574, immediate steps and long-term security practices are recommended.
Immediate Steps to Take
- Implement input validation to restrict the length of user-controlled parameters.
- Apply the latest patches and updates provided by the vendor.
Long-Term Security Practices
- Conduct regular security assessments and penetration testing to identify vulnerabilities.
- Educate users on secure coding practices and the importance of input validation.
Patching and Updates
- Stay informed about security advisories from Sysax and apply patches promptly to mitigate the risk of exploitation.