CVE-2020-26070 : What You Need to Know
Learn about CVE-2020-26070, a Cisco IOS XR Software vulnerability allowing DoS attacks. Find mitigation steps and impact details in this article.
A vulnerability in the ingress packet processing function of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
Understanding CVE-2020-26070
This CVE involves a vulnerability in Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers that could lead to a DoS attack.
What is CVE-2020-26070?
The vulnerability arises from improper resource allocation during network traffic processing, potentially triggered by specific Layer 2 or Layer 3 protocol data units.
The Impact of CVE-2020-26070
The vulnerability could result in a DoS condition on affected devices, causing them to run out of buffer resources and become unable to process or forward traffic until restarted.
Technical Details of CVE-2020-26070
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability in Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers stems from improper resource allocation during network traffic processing.
Affected Systems and Versions
- Product: Cisco IOS XR Software
- Vendor: Cisco
- Versions: Not applicable
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Availability Impact: High
- Base Score: 8.6 (High)
- Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Mitigation and Prevention
Steps to address and prevent the CVE-2020-26070 vulnerability.
Immediate Steps to Take
- Apply vendor patches or updates promptly.
- Monitor network traffic for any suspicious activity.
- Implement network segmentation to limit the impact of potential attacks.
Long-Term Security Practices
- Regularly update and patch all software and firmware.
- Conduct security audits and assessments periodically.
- Educate users and administrators on best security practices.
Patching and Updates
- Refer to the vendor's security advisory for specific patch details and instructions.