CVE-2021-1513 : Security Advisory and Response

A vulnerability in the vDaemon process of Cisco SD-WAN Software could allow an unauthenticated, remote attacker to cause a device to reload, resulting in a denial of service (DoS) condition. This could be exploited by sending crafted traffic to an affected device.

Understanding CVE-2021-1513

This CVE identifies a denial of service vulnerability in the Cisco SD-WAN Solution.

What is CVE-2021-1513?

The CVE-2021-1513 vulnerability involves insufficient handling of malformed packets in Cisco SD-WAN Software's vDaemon process.

The Impact of CVE-2021-1513

The vulnerability could allow an attacker to remotely cause a device to reload, leading to a DoS condition. The impact includes a high availability impact with a CVSS base score of 7.5.

Technical Details of CVE-2021-1513

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability in the vDaemon process of Cisco SD-WAN Software arises from inadequate handling of malformed packets.

Affected Systems and Versions

The vulnerability affects Cisco SD-WAN Solution with versions that are outdated and susceptible to this issue.

Exploitation Mechanism

An unauthenticated, remote attacker can exploit this vulnerability by sending manipulated traffic to the targeted device, causing it to reload and leading to a denial of service.

Mitigation and Prevention

Protecting systems from this vulnerability involves immediate actions and long-term security practices.

Immediate Steps to Take

It is recommended to apply security patches or updates provided by Cisco to address this vulnerability promptly.

Long-Term Security Practices

Implement network segmentation, access controls, and regular security updates to mitigate the risk of similar vulnerabilities in the future.

Patching and Updates

Stay informed about security advisories from Cisco and other relevant sources to apply patches and updates as soon as they are available.