CVE-2020-3428 Denial of service in Cisco IOS XE Software

High 7.4 Published 24 Sep 2020 Updated 13 Nov 2024

An unauthenticated adjacent attacker can cause a denial of service on Cisco Catalyst 9000 wireless controllers by sending crafted HTTP packets.

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

What is CVE-2020-3428?

CVE-2020-3428 is a high-severity denial of service vulnerability in Cisco Ios Xe, published on 24 Sep 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability in the WLAN Local Profiling feature of Cisco IOS XE Wireless Controller Software for the Cisco Catalyst 9000 Family could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to incorrect parsing of HTTP packets while performing HTTP-based endpoint device classifications. An attacker could exploit this vulnerability by sending a crafted HTTP packet to an affected device. A successful exploit could cause an affected device to reboot, resulting in a DoS condition.

Weakness: CWE-400, CWE-20

Which versions are affected by CVE-2020-3428?

It affects 1 product.

Products include Cisco Ios Xe.

How do I fix CVE-2020-3428?

No fix has been published for CVE-2020-3428 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-2020-3428 being exploited?

There is no known exploitation of CVE-2020-3428 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-hv89-w63p-3mf5.