CVE-2021-45887 : Vulnerability Insights and Analysis
Learn about CVE-2021-45887 affecting PONTON X/P Messenger. Discover how attackers can execute remote code via path traversal in ZIP files and how to prevent it.
An issue in PONTON X/P Messenger before 3.11.2 allows remote code execution via path traversal in uploaded ZIP files.
Understanding CVE-2021-45887
What is CVE-2021-45887?
The vulnerability in PONTON X/P Messenger allows attackers to upload executable scripts, leading to remote code execution on the server.
The Impact of CVE-2021-45887
The issue enables attackers to execute arbitrary code on the underlying server, compromising its security and integrity.
Technical Details of CVE-2021-45887
Vulnerability Description
Due to path traversal in private/SchemaSetUpload.do for uploaded ZIP files, web application admins can unwittingly allow the upload of malicious scripts.
Affected Systems and Versions
- Product: PONTON X/P Messenger
- Vendor: PONTON
- Versions affected: < 3.11.2
Exploitation Mechanism
Attackers can exploit the vulnerability by uploading an executable script through imgs/*.jsp URI, gaining remote code execution capabilities.
Mitigation and Prevention
Immediate Steps to Take
- Upgrade PONTON X/P Messenger to version 3.11.2 or above.
- Restrict access to the vulnerable endpoint.
Long-Term Security Practices
- Regularly monitor and audit uploaded files for any suspicious content.
- Implement strong input validation mechanisms to prevent path traversal vulnerabilities.
Patching and Updates
Apply security patches and updates provided by the vendor to mitigate the risk of path traversal and remote code execution.