CVE-2020-3385 : What You Need to Know
Learn about CVE-2020-3385, a high-severity vulnerability in Cisco SD-WAN vEdge Routers allowing DoS attacks. Find mitigation steps and patching advice here.
A vulnerability in the deep packet inspection (DPI) engine of Cisco SD-WAN vEdge Routers could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected system. The vulnerability is due to insufficient handling of malformed packets, potentially leading to device reboots.
Understanding CVE-2020-3385
This CVE involves a denial of service vulnerability in Cisco SD-WAN vEdge Routers due to issues in packet handling.
What is CVE-2020-3385?
The vulnerability in the deep packet inspection engine of Cisco SD-WAN vEdge Routers allows attackers to trigger a DoS condition by sending crafted packets through the affected device.
The Impact of CVE-2020-3385
- CVSS Base Score: 7.4 (High Severity)
- Attack Vector: Adjacent Network
- Availability Impact: High
- The vulnerability could result in device reboots, causing service disruption.
Technical Details of CVE-2020-3385
This section provides detailed technical insights into the vulnerability.
Vulnerability Description
The vulnerability stems from inadequate handling of malformed packets in the DPI engine of Cisco SD-WAN vEdge Routers.
Affected Systems and Versions
- Affected Product: Cisco SD-WAN vEdge router
- Vendor: Cisco
- Affected Version: n/a
Exploitation Mechanism
Attackers can exploit this vulnerability by sending specially crafted packets through the affected device, triggering a DoS condition.
Mitigation and Prevention
Protecting systems from CVE-2020-3385 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor-provided patches or updates promptly.
- Implement network segmentation to limit the impact of potential attacks.
- Monitor network traffic for any signs of exploitation.
Long-Term Security Practices
- Regularly update and patch all network devices.
- Conduct security assessments and penetration testing to identify vulnerabilities.
- Educate users and IT staff on best security practices.
- Implement intrusion detection and prevention systems.
Patching and Updates
- Cisco has likely released patches to address this vulnerability. Ensure timely application of these updates to mitigate the risk of exploitation.