CVE-2019-18929 : Exploit Details and Defense Strategies
Learn about CVE-2019-18929, a vulnerability in Western Digital My Cloud EX2 Ultra firmware 2.31.183 allowing remote code execution. Find mitigation steps and prevention measures here.
The firmware version 2.31.183 of the Western Digital My Cloud EX2 Ultra has a vulnerability that allows remote execution of arbitrary code by web users, including guest accounts.
Understanding CVE-2019-18929
This CVE identifies a stack-based buffer overflow in the download_mgr.cgi file of the affected firmware version.
What is CVE-2019-18929?
The vulnerability in the Western Digital My Cloud EX2 Ultra firmware 2.31.183 permits web users, including guest accounts, to execute arbitrary code remotely.
The Impact of CVE-2019-18929
The vulnerability enables attackers to exploit the stack-based buffer overflow, potentially leading to unauthorized execution of code on the affected system.
Technical Details of CVE-2019-18929
The following technical details provide insight into the vulnerability.
Vulnerability Description
The stack-based buffer overflow in the download_mgr.cgi file of firmware version 2.31.183 allows for the remote execution of arbitrary code by web users.
Affected Systems and Versions
- Product: Western Digital My Cloud EX2 Ultra
- Vendor: Western Digital
- Version: 2.31.183
Exploitation Mechanism
The vulnerability can be exploited by sending specially crafted requests to the download_mgr.cgi file, triggering the buffer overflow and executing malicious code remotely.
Mitigation and Prevention
To address CVE-2019-18929 and enhance system security, consider the following mitigation strategies.
Immediate Steps to Take
- Disable guest accounts on the affected system to limit potential access points for attackers.
- Monitor network traffic for any suspicious activity that may indicate exploitation attempts.
Long-Term Security Practices
- Regularly update firmware and software to patch known vulnerabilities and enhance system security.
- Implement network segmentation to isolate critical systems and reduce the impact of potential attacks.
Patching and Updates
- Apply patches and updates provided by Western Digital to address the vulnerability and improve system security.