CVE-2020-3375 Cisco SD-WAN Solution Software Buffer Overflow Vulnerability

Critical 9.8 Published 31 Jul 2020 Updated 13 Nov 2024

Unauthenticated remote attackers can exploit a buffer overflow in Cisco SD-WAN vManage to execute commands as root, read data, and modify the system.

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-2020-3375?

CVE-2020-3375 is a critical memory corruption vulnerability in Cisco SD-WAN vManage, published on 31 Jul 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in Cisco SD-WAN Solution Software could allow an unauthenticated, remote 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, make changes to the system that they are not authorized to make, and execute commands on an affected system with privileges of the root user.

Weakness: CWE-20, CWE-119

Which versions are affected by CVE-2020-3375?

It affects 2 products.

Products include Cisco Ios Xe Sd-Wan, Cisco Sd-Wan.

How do I fix CVE-2020-3375?

No fix has been published for CVE-2020-3375 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-2020-3375 being exploited?

There is no known exploitation of CVE-2020-3375 in the wild and no public exploit code.

Sources

Also known as GHSA-76f8-hj3g-qcfw.