CVE-2021-1513 Cisco SD-WAN Software vDaemon Denial of Service Vulnerability

High 7.5 Published 6 May 2021 Updated 8 Nov 2024

Unauthenticated remote attackers can cause Cisco SD-WAN devices to reload via malformed packets, resulting in a denial of service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-1513?

CVE-2021-1513 is a high-severity denial of service vulnerability in Cisco Catalyst Sd-Wan Manager, published on 6 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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 vulnerability is due to insufficient handling of malformed packets. An attacker could exploit this vulnerability by sending crafted traffic to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

Weakness: CWE-20

Which versions are affected by CVE-2021-1513?

It affects 12 products.

Products include Cisco Catalyst Sd-Wan Manager, Cisco Sd-Wan Vbond Orchestrator, Cisco Vedge-100b Firmware, Cisco Vedge 1000 Firmware, Cisco Vedge 100 Firmware, Cisco Vedge 100b Firmware and 6 more.

How do I fix CVE-2021-1513?

No fix has been published for CVE-2021-1513 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2021-1513 being exploited?

There is no known exploitation of CVE-2021-1513 in the wild and no public exploit code.

All Cisco Catalyst Sd-Wan Manager vulnerabilities

Sources

Also known as GHSA-g2x9-h986-5hj3.