Discover the impact of CVE-2021-1431, a DoS vulnerability in Cisco IOS XE SD-WAN Software. Learn about affected systems, exploitation, and mitigation steps.
A vulnerability in the vDaemon process of Cisco IOS XE SD-WAN Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) attack by sending crafted traffic to an affected device. Learn more about the impact, technical details, and mitigation steps below.
Understanding CVE-2021-1431
This section provides insights into the nature of the vulnerability and its effects.
What is CVE-2021-1431?
The CVE-2021-1431 vulnerability exists in the vDaemon process of Cisco IOS XE SD-WAN Software, enabling a remote attacker to trigger device reloads, leading to a denial of service condition.
The Impact of CVE-2021-1431
The vulnerability, due to inadequate handling of malformed packets, can be exploited by remote attackers to force affected devices to reload, causing a DoS situation.
Technical Details of CVE-2021-1431
Delve into the technical aspects of the CVE-2021-1431 vulnerability to understand its implications.
Vulnerability Description
The flaw in the vDaemon process of the software allows unauthenticated attackers to exploit insufficient packet handling, resulting in device reloads and DoS.
Affected Systems and Versions
Cisco IOS XE Software versions are impacted by this vulnerability, making devices susceptible to DoS attacks.
Exploitation Mechanism
Crafted traffic is used by remote threat actors to trigger the vDaemon process in affected devices, leading to Denial of Service scenarios.
Mitigation and Prevention
Explore the immediate and long-term measures to protect your systems from CVE-2021-1431.
Immediate Steps to Take
Implement network segmentation, apply access control lists, and monitor traffic for anomalies to hinder potential DoS attacks.
Long-Term Security Practices
Regularly update and patch Cisco IOS XE SD-WAN Software to mitigate known vulnerabilities and enhance system security.
Patching and Updates
Stay informed about security advisories from Cisco to promptly apply patches and updates that address vulnerabilities like CVE-2021-1431.