CVE-2020-3353 : Security Advisory and Response
Learn about CVE-2020-3353, a vulnerability in Cisco Identity Services Engine (ISE) allowing a DoS attack. Find out the impact, affected systems, exploitation, and mitigation steps.
A vulnerability in the syslog processing engine of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
Understanding CVE-2020-3353
Cisco Identity Services Engine (ISE) is susceptible to a race condition in the syslog processing engine, potentially leading to a DoS attack.
What is CVE-2020-3353?
The vulnerability in Cisco ISE allows attackers to crash the Application Server process by flooding the device with a high rate of syslog messages.
The Impact of CVE-2020-3353
- CVSS Base Score: 5.9 (Medium)
- Attack Vector: Network
- Attack Complexity: High
- Availability Impact: High
- Successful exploitation could result in a DoS condition on the affected device.
Technical Details of CVE-2020-3353
The technical aspects of the vulnerability in Cisco ISE.
Vulnerability Description
- The vulnerability is caused by a race condition during syslog message processing.
Affected Systems and Versions
- Affected Product: Cisco Identity Services Engine Software
- Vendor: Cisco
- Affected Version: Not applicable
Exploitation Mechanism
- Attackers can exploit the vulnerability by sending a high volume of syslog messages to the device.
Mitigation and Prevention
Steps to mitigate and prevent the CVE-2020-3353 vulnerability.
Immediate Steps to Take
- Monitor syslog traffic for unusual patterns.
- Apply vendor-supplied patches or updates.
Long-Term Security Practices
- Regularly update and patch all software and systems.
- Implement network segmentation and access controls.
Patching and Updates
- Cisco has likely released patches or updates to address this vulnerability.