CVE-2020-3372 Cisco SD-WAN vManage Software Denial of Service Vulnerability

Medium 6.5 Published 16 Jul 2020 Updated 15 Nov 2024

Authenticated attackers can cause denial of service in Cisco SD-WAN vManage by exhausting system memory via crafted HTTP requests.

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

What is CVE-2020-3372?

CVE-2020-3372 is a medium-severity denial of service vulnerability in Cisco SD-WAN vManage, published on 16 Jul 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability in the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to consume excessive system memory and cause a denial of service (DoS) condition on an affected system. The vulnerability is due to inefficient memory management. An attacker could exploit this vulnerability by sending a large number of crafted HTTP requests to the affected web-based management interface. A successful exploit could allow the attacker to exhaust system memory, which could cause the system to stop processing new connections and could result in a DoS condition.

Weakness: CWE-400

Which versions are affected by CVE-2020-3372?

It affects 1 product.

Products include Cisco Sd-Wan Firmware.

How do I fix CVE-2020-3372?

No fix has been published for CVE-2020-3372 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-2020-3372 being exploited?

There is no known exploitation of CVE-2020-3372 in the wild and no public exploit code.

Sources

Also known as GHSA-795h-g7ph-22h5.