CVE-2018-0485 : What You Need to Know
Discover the security flaw in Cisco IOS Software that could lead to a denial of service situation on affected devices. Learn about the impact, technical details, and mitigation steps for CVE-2018-0485.
A security flaw has been identified in the SM-1T3/E3 firmware on Cisco Second Generation Integrated Services Routers (ISR G2) and the Cisco 4451-X Integrated Services Router (ISR4451-X), potentially leading to a denial of service (DoS) situation.
Understanding CVE-2018-0485
This CVE involves a vulnerability in Cisco IOS Software that could allow an unauthorized remote attacker to trigger a restart of the ISR G2 Router or the SM-1T3/E3 module on the ISR4451-X, resulting in a DoS condition on the affected device.
What is CVE-2018-0485?
The vulnerability stems from inadequate handling of user input, enabling an attacker to exploit the flaw by establishing a connection with the SM-1T3/E3 module console and inputting a specific character sequence.
The Impact of CVE-2018-0485
The exploitation of this vulnerability could lead to a DoS condition on the affected device, disrupting its normal operation and potentially causing service interruptions.
Technical Details of CVE-2018-0485
This section provides more in-depth technical information about the CVE.
Vulnerability Description
The vulnerability in the SM-1T3/E3 firmware allows an attacker to force a restart of the ISR G2 Router or the SM-1T3/E3 module on the ISR4451-X by manipulating user input.
Affected Systems and Versions
- Product: Cisco IOS Software
- Vendor: Cisco
- Versions: Not applicable
Exploitation Mechanism
- Attacker establishes a connection with the SM-1T3/E3 module console
- Inputs a specific sequence of characters to trigger a restart of the affected devices
Mitigation and Prevention
Protecting systems from CVE-2018-0485 requires immediate action and long-term security practices.
Immediate Steps to Take
- Apply vendor-provided patches and updates promptly
- Monitor network traffic for any suspicious activity
- Restrict access to critical devices and services
Long-Term Security Practices
- Regularly update and patch all software and firmware
- Conduct security training for staff to recognize and respond to potential threats
Patching and Updates
- Cisco has released patches to address this vulnerability
- Ensure all affected systems are updated with the latest firmware and software versions