CVE-2020-3190 : What You Need to Know
Learn about CVE-2020-3190, a vulnerability in Cisco IOS XR Software allowing remote attackers to cause a denial of service condition for IPsec sessions. Find out the impact, affected systems, exploitation details, and mitigation steps.
A vulnerability in the IPsec packet processor of Cisco IOS XR Software could allow an unauthenticated remote attacker to cause a denial of service (DoS) condition for IPsec sessions to an affected device.
Understanding CVE-2020-3190
This CVE involves a vulnerability in Cisco IOS XR Software that could lead to a denial of service attack.
What is CVE-2020-3190?
The vulnerability in the IPsec packet processor of Cisco IOS XR Software allows an unauthenticated remote attacker to trigger a DoS condition for IPsec sessions on the affected device.
The Impact of CVE-2020-3190
- The vulnerability could result in a denial of service condition for IPsec sessions on the affected device.
- Attackers could deplete IPsec memory, causing all future IPsec packets to be dropped by the device.
Technical Details of CVE-2020-3190
This section provides more technical insights into the CVE.
Vulnerability Description
The vulnerability is a result of improper handling of packets by the IPsec packet processor, allowing attackers to exploit it by sending malicious ICMP error messages.
Affected Systems and Versions
- Product: Cisco IOS XR Software
- Vendor: Cisco
- Version: Unspecified
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Base Score: 5.8 (Medium)
- Availability Impact: Low
- Scope: Changed
- No privileges required for exploitation
Mitigation and Prevention
Steps to address and prevent the CVE.
Immediate Steps to Take
- Apply vendor patches or updates as soon as they are available.
- Monitor network traffic for any signs of exploitation.
- Implement firewall rules to restrict access to vulnerable services.
Long-Term Security Practices
- Regularly update and patch all software and systems.
- Conduct security training for employees to recognize and report suspicious activities.
- Implement network segmentation to limit the impact of potential attacks.
Patching and Updates
- Stay informed about security advisories from Cisco.
- Apply security patches promptly to mitigate vulnerabilities.