CVE-2023-49788 : Security Advisory and Response
CVE-2023-49788 involving improper handling of browser-side input in richdocuments path handling in Collabora Online poses a high-risk, necessitating immediate upgrade to version 23.5.602 for mitigation.
GitHub_M published CVE-2023-49788 on December 8, 2023, related to the improper handling of browser-side provided input in richdocuments path handling.
Understanding CVE-2023-49788
This CVE involves a vulnerability in Collabora Online, a collaborative office suite. Vulnerable versions of the richdocumentscode app can be exploited to overwrite files outside the subdirectory the server has designated.
What is CVE-2023-49788?
CVE-2023-49788 highlights a Trust Boundary Violation and Improper Path Traversal issue in Collabora Online's CODE Server, allowing unauthorized file overwriting and access.
The Impact of CVE-2023-49788
This vulnerability poses a high severity risk, with a CVSS base score of 7.2. Attackers could tamper with sensitive files, compromising data integrity.
Technical Details of CVE-2023-49788
The vulnerability in richdocumentscode app can be exploited through modified client->server commands, enabling file overwriting outside the server's designated directory.
Vulnerability Description
Collabora Online's richdocumentscode app lacks proper input validation, allowing attackers to access and modify files beyond the intended scope, thereby jeopardizing data confidentiality and integrity.
Affected Systems and Versions
Users utilizing Collabora Online version less than 23.5.602 are susceptible to this vulnerability. It is crucial to update to the fixed release to mitigate the risk.
Exploitation Mechanism
The bug enables attackers to manipulate server commands to interact with files outside the permissible directory, a significant security loophole that requires immediate attention.
Mitigation and Prevention
To safeguard against CVE-2023-49788, users of Collabora Online's CODE Server are strongly advised to upgrade to release 23.5.602 or newer.
Immediate Steps to Take
Immediate action includes updating to the patched version to prevent potential exploitation and unauthorized file access.
Long-Term Security Practices
Implement regular security audits, ensure robust input validation practices, and stay informed about security updates to mitigate future vulnerabilities.
Patching and Updates
Regularly monitor security advisories and promptly install patches and updates to fortify the system against evolving threats.