CVE-2020-3200 : What You Need to Know
Learn about CVE-2020-3200, a vulnerability in Cisco IOS and IOS XE Software that allows an attacker to cause a device reload, leading to a denial of service condition. Find mitigation steps and patching details here.
A vulnerability in the Secure Shell (SSH) server code of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to cause an affected device to reload. This could lead to a denial of service (DoS) condition.
Understanding CVE-2020-3200
This CVE involves a vulnerability in the SSH server code of Cisco IOS and IOS XE Software that could be exploited by an authenticated remote attacker.
What is CVE-2020-3200?
The vulnerability in the SSH server code of Cisco IOS and IOS XE Software allows an attacker to cause a device reload, resulting in a denial of service condition.
The Impact of CVE-2020-3200
The vulnerability could be exploited by an authenticated, remote attacker to cause a device reload, leading to a denial of service (DoS) condition.
Technical Details of CVE-2020-3200
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability is due to an internal state not being represented correctly in the SSH state machine, leading to unexpected behavior that can be triggered by a specific traffic pattern.
Affected Systems and Versions
- Product: Cisco IOS 12.2(58)SE
- Vendor: Cisco
- Version: n/a
Exploitation Mechanism
An attacker can exploit this vulnerability by creating an SSH connection to an affected device and using a specific traffic pattern that triggers an error condition within the connection.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.
Immediate Steps to Take
- Apply the necessary security patches provided by Cisco to address this vulnerability.
- Monitor network traffic for any suspicious SSH connections.
Long-Term Security Practices
- Regularly update and patch all software and firmware to prevent vulnerabilities.
- Implement network segmentation and access controls to limit the impact of potential attacks.
Patching and Updates
- Cisco has released patches to address this vulnerability. Ensure timely application of these patches to secure affected systems.