CVE-2020-3309 : Exploit Details and Defense Strategies
Learn about CVE-2020-3309, a vulnerability in Cisco Firepower Device Manager (FDM) On-Box software allowing remote attackers to overwrite files on affected devices. Find mitigation steps here.
A vulnerability in Cisco Firepower Device Manager (FDM) On-Box software could allow an authenticated, remote attacker to overwrite arbitrary files on the underlying operating system of an affected device.
Understanding CVE-2020-3309
This CVE involves a security flaw in Cisco Firepower Device Manager (FDM) On-Box software that could be exploited by attackers to manipulate files on affected devices.
What is CVE-2020-3309?
The vulnerability in Cisco Firepower Device Manager (FDM) On-Box software allows a remote attacker to upload a malicious file, potentially leading to the overwrite of arbitrary files and modification of the device's operating system.
The Impact of CVE-2020-3309
The vulnerability poses a medium severity risk with a CVSS base score of 6.5. If successfully exploited, it could result in high availability and integrity impacts on the affected device.
Technical Details of CVE-2020-3309
This section provides more technical insights into the vulnerability.
Vulnerability Description
The flaw is attributed to improper input validation in the Cisco Firepower Device Manager (FDM) On-Box software, enabling attackers to overwrite files on the device's operating system.
Affected Systems and Versions
- Product: Cisco Firepower Threat Defense Software
- Vendor: Cisco
- Version: Not applicable
Exploitation Mechanism
Attackers can exploit this vulnerability by uploading a malicious file to the affected device, allowing them to overwrite arbitrary files and modify the device's underlying operating system.
Mitigation and Prevention
Protecting systems from CVE-2020-3309 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor-provided patches or updates promptly.
- Monitor network traffic for any suspicious activities.
- Restrict access to the affected device to authorized personnel only.
Long-Term Security Practices
- Regularly update and patch all software and firmware on network devices.
- Conduct security training for employees to raise awareness of potential threats.
Patching and Updates
Ensure that the latest patches and updates from Cisco are applied to mitigate the vulnerability effectively.