Overview
CVE-2020-36880 describes a local buffer overflow vulnerability present in Flexsense DiskBoss version 7.7.14. This vulnerability resides within the ‘Reports and Data Directory’ field of the application, potentially allowing a local attacker to execute arbitrary code on the affected system.
Technical Details
The vulnerability stems from insufficient input validation when handling user-supplied data for the ‘Reports and Data Directory’ field. By providing an overly long string to this field, an attacker can overwrite adjacent memory regions, leading to a buffer overflow condition. Successful exploitation could grant the attacker the ability to inject and execute malicious code with the privileges of the user running DiskBoss.
The specific exploit detailed on Exploit-DB (https://www.exploit-db.com/exploits/48689) likely demonstrates the process of crafting a malicious string to trigger this overflow.
CVSS Analysis
As per the provided information, the CVSS score and severity are currently listed as N/A. This could be due to the vulnerability’s limited scope (local access required) or the availability of mitigations. However, the potential for arbitrary code execution warrants a serious assessment if using the vulnerable software. A proper CVSS score assessment would need to consider exploitability metrics like attack vector and complexity, as well as impact metrics like confidentiality, integrity, and availability.
Possible Impact
The potential impact of CVE-2020-36880 is significant, even with its local attack vector. A successful exploit could allow an attacker to:
- Gain complete control of the affected system.
- Install malware or other malicious software.
- Steal sensitive data.
- Modify system configurations.
- Use the compromised system as a foothold for further attacks on the network.
While local access is required, an attacker might gain this access through social engineering, malware, or other means.
Mitigation and Patch Steps
To mitigate the risk associated with CVE-2020-36880, consider the following steps:
- Check for Updates: Visit the Flexsense DiskBoss website (https://www.diskboss.com/) to check for available updates or patches addressing this vulnerability. Upgrade to the latest version as soon as possible.
- Restrict Access: Limit access to the system running DiskBoss to authorized users only.
- Input Validation: If possible, configure the application to enforce stricter input validation for the ‘Reports and Data Directory’ field, although this might not be configurable without a patch from the vendor.
- Monitor Systems: Implement security monitoring solutions to detect suspicious activity that might indicate exploitation attempts.
