CVE-2021-45790 : What You Need to Know
Learn about CVE-2021-45790, a critical arbitrary file upload vulnerability in Metersphere v1.15.4 that enables unauthenticated users to upload files to arbitrary directories, potentially leading to command execution.
A vulnerability in Metersphere v1.15.4 allows unauthenticated users to upload files to arbitrary directories, potentially enabling attackers to execute commands through a cron job.
Understanding CVE-2021-45790
What is CVE-2021-45790?
An arbitrary file upload vulnerability in Metersphere v1.15.4 permits unauthorized file uploads to any directory, possibly leading to command execution by malicious actors.
The Impact of CVE-2021-45790
The vulnerability can be exploited by unauthenticated users to upload potentially harmful files and execute arbitrary commands on the target system, posing a significant security risk.
Technical Details of CVE-2021-45790
Vulnerability Description
The issue allows unauthenticated users to upload files to arbitrary directories, which could facilitate unauthorized command execution via a crafted cron job.
Affected Systems and Versions
- Product: Metersphere
- Version: v1.15.4
Exploitation Mechanism
Attackers can take advantage of this flaw by uploading malicious files to the server and subsequently leveraging a cron job to execute commands.
Mitigation and Prevention
Immediate Steps to Take
- Implement access controls to restrict unauthenticated file uploads.
- Regularly monitor for unauthorized file uploads and unusual cron job activities.
Long-Term Security Practices
- Conduct regular security assessments to identify and patch vulnerabilities.
- Provide security awareness training to prevent unauthorized actions.
Patching and Updates
- Deploy patches or updates from the vendor to address this vulnerability effectively.