CVE-2020-3264 Cisco SD-WAN Solution Buffer Overflow Vulnerability

High 7.1 Published 19 Mar 2020 Updated 15 Nov 2024

An authenticated local attacker can exploit a buffer overflow in Cisco SD-WAN to access unauthorized information and modify system settings.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-3264?

CVE-2020-3264 is a high-severity memory corruption vulnerability in Cisco SD-WAN Solution, published on 19 Mar 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability in Cisco SD-WAN Solution software could allow an authenticated, local attacker to cause a buffer overflow on an affected device. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted traffic to an affected device. A successful exploit could allow the attacker to gain access to information that they are not authorized to access and make changes to the system that they are not authorized to make.

Weakness: CWE-120, CWE-119

Which versions are affected by CVE-2020-3264?

It affects 1 product.

Products include Cisco Sd-Wan Firmware.

How do I fix CVE-2020-3264?

No fix has been published for CVE-2020-3264 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2020-3264 being exploited?

There is no known exploitation of CVE-2020-3264 in the wild and no public exploit code.

Sources

Also known as GHSA-q7p4-5vmg-rr2r.