CVE-2022-46899 : Exploit Details and Defense Strategies
Learn about CVE-2022-46899 impacting Vocera Report Server and Voice Server 5.x through 5.8. Understand the risks, technical details, and mitigation strategies.
A security issue was identified in Vocera Report Server and Voice Server 5.x through 5.8, leading to Arbitrary File Upload vulnerability.
Understanding CVE-2022-46899
This section will provide detailed insights into the CVE-2022-46899 vulnerability.
What is CVE-2022-46899?
The BaseController class in Vocera Report Server and Voice Server 5.x through 5.8 permits the upload of arbitrary files through multipart/form-data POST requests.
The Impact of CVE-2022-46899
The vulnerability allows malicious actors to upload files to the server, potentially leading to unauthorized access or execution of arbitrary code.
Technical Details of CVE-2022-46899
In this section, we will delve into the technical aspects of CVE-2022-46899.
Vulnerability Description
The issue stems from the BaseController class enabling the upload of arbitrary files via HTTP multipart/form-data POST requests.
Affected Systems and Versions
Vendor and product information are listed as 'n/a,' indicating the vulnerability affects all versions of Vocera Report Server and Voice Server 5.x through 5.8.
Exploitation Mechanism
By crafting a malicious multipart/form-data POST request with parameters containing a filename entry, threat actors can upload files to the server's upload-staging directory with specified filenames.
Mitigation and Prevention
This section provides guidance on mitigating the CVE-2022-46899 vulnerability.
Immediate Steps to Take
- Disable file uploads via HTTP requests if not essential.
- Implement input validation mechanisms to restrict accepted file types and sizes.
- Monitor server logs for suspicious file upload activities.
Long-Term Security Practices
- Regularly update Vocera Report Server and Voice Server to the latest versions with security patches.
- Conduct security assessments and penetration testing to identify and address vulnerabilities proactively.
Patching and Updates
Stay informed about security advisories from the vendor and apply relevant patches promptly to secure the environment.