CVE-2018-0298 : Security Advisory and Response
Learn about CVE-2018-0298, a vulnerability in Cisco FXOS & UCS Fabric Interconnect Software allowing unauthorized attackers to trigger a buffer overflow, potentially leading to a denial of service (DoS) situation.
A vulnerability in the web UI of Cisco FXOS and Cisco UCS Fabric Interconnect Software could allow an unauthorized attacker to trigger a buffer overflow, potentially leading to a denial of service (DoS) situation.
Understanding CVE-2018-0298
This CVE involves a flaw in the web user interface of Cisco FXOS and Cisco UCS Fabric Interconnect Software, enabling an attacker to exploit a buffer overflow vulnerability.
What is CVE-2018-0298?
The vulnerability arises from inadequate input validation within the web UI, allowing an attacker to crash the process and potentially force a device restart, causing a DoS situation.
The Impact of CVE-2018-0298
- Unauthorized attacker could trigger a buffer overflow without authentication
- Potential for a denial of service (DoS) situation on the affected system
Technical Details of CVE-2018-0298
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The flaw in the web UI of Cisco FXOS and Cisco UCS Fabric Interconnect Software allows an attacker to exploit a buffer overflow vulnerability due to improper input validation.
Affected Systems and Versions
- Firepower 4100 Series Next-Generation Firewall
- Firepower 9300 Security Appliance
- UCS 6200 Series Fabric Interconnects
- UCS 6300 Series Fabric Interconnects
Exploitation Mechanism
To exploit this vulnerability, the attacker needs to send a malicious HTTP or HTTPS packet to the physical management interface of the affected system.
Mitigation and Prevention
Protecting systems from CVE-2018-0298 requires immediate steps and long-term security practices.
Immediate Steps to Take
- Apply vendor-supplied patches promptly
- Implement network segmentation to limit exposure
- Monitor network traffic for signs of exploitation
Long-Term Security Practices
- Regularly update and patch software and firmware
- Conduct security assessments and audits
- Educate users on safe browsing habits
Patching and Updates
Ensure timely installation of patches provided by Cisco to address the vulnerability.