CVE-2018-0453 : Security Advisory and Response
Discover the security flaw in Cisco Firepower System Software allowing attackers to execute CLI commands with root privileges. Learn about the impact, affected systems, and mitigation steps.
A security flaw has been discovered in the Sourcefire tunnel control channel protocol within the Cisco Firepower System Software, potentially allowing an attacker to execute specific CLI commands with root privileges on the Cisco Firepower Management Center (FMC).
Understanding CVE-2018-0453
This CVE involves a vulnerability in the Sourcefire tunnel control channel protocol in Cisco Firepower System Software, affecting Cisco Firepower Threat Defense (FTD) sensors.
What is CVE-2018-0453?
The vulnerability allows a local attacker with authenticated access to execute specific CLI commands with root privileges on the Cisco FMC or other Firepower sensors managed by the same FMC.
The Impact of CVE-2018-0453
The CVSS base score for this vulnerability is 8.2, indicating a high severity level.
Technical Details of CVE-2018-0453
This section provides more technical insights into the vulnerability.
Vulnerability Description
The flaw arises from inadequate verification of certain CLI commands executed through a Sourcefire tunnel connection.
Affected Systems and Versions
- Product: Cisco FireSIGHT System Software
- Vendor: Cisco
- Versions: Not applicable
Exploitation Mechanism
- Attacker must have root privileges for at least one affected sensor or the Cisco FMC
- Insufficient checks for certain CLI commands executed via a Sourcefire tunnel connection
- Attacker can modify device configurations or delete files on affected devices
Mitigation and Prevention
Protecting systems from this vulnerability requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply patches and updates provided by Cisco
- Monitor network traffic for any suspicious activities
- Restrict access to sensitive systems and devices
Long-Term Security Practices
- Regularly update and patch all software and firmware
- Conduct security audits and penetration testing
- Educate users on cybersecurity best practices
Patching and Updates
Cisco has released patches to address this vulnerability. Ensure timely installation of these updates to mitigate the risk of exploitation.