CVE-2020-3298 : Security Advisory and Response
Learn about CVE-2020-3298, a high-severity vulnerability in Cisco ASA and FTD Software allowing remote attackers to cause a denial of service condition. Find mitigation steps and preventive measures.
A vulnerability in the Open Shortest Path First (OSPF) implementation of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition by reloading an affected device.
Understanding CVE-2020-3298
This CVE involves a vulnerability in the OSPF implementation of Cisco ASA and FTD Software, potentially leading to a DoS attack.
What is CVE-2020-3298?
The vulnerability arises from improper memory protection mechanisms when processing specific OSPF packets. Attackers can exploit this by sending malformed OSPF packets to the device, causing a reload and disrupting client traffic.
The Impact of CVE-2020-3298
The vulnerability has a CVSS base score of 8.6 (High severity) with a significant impact on availability, potentially leading to a DoS condition.
Technical Details of CVE-2020-3298
This section delves into the technical aspects of the vulnerability.
Vulnerability Description
The vulnerability in OSPF implementation allows remote unauthenticated attackers to trigger a DoS condition by sending malformed OSPF packets.
Affected Systems and Versions
- Product: Cisco Adaptive Security Appliance (ASA) Software
- Vendor: Cisco
- Affected Version: Not applicable
Exploitation Mechanism
Attackers exploit the vulnerability by sending a series of malformed OSPF packets in a short time, causing the affected device to reload.
Mitigation and Prevention
Protecting systems from CVE-2020-3298 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor-provided patches or updates promptly.
- Implement network segmentation to minimize the impact of potential attacks.
- Monitor network traffic for any signs of malicious activity.
Long-Term Security Practices
- Regularly update and patch all software and firmware.
- Conduct security training for employees to recognize and report suspicious activities.
- Implement strong access controls and authentication mechanisms.
Patching and Updates
Regularly check for security advisories from Cisco and apply patches as soon as they are available.