CVE-2020-3232 Cisco ASR 920 Series Aggregation Services Router Model 12SZ-IM SNMP Denial of Service Vulnerability

Medium 6.3 Published 3 Jun 2020 Updated 15 Nov 2024

An authenticated remote attacker can cause a Cisco ASR 920 router to reload via SNMP, resulting in a denial of service.

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-2020-3232?

CVE-2020-3232 is a medium-severity denial of service vulnerability in Cisco Ios Xe, published on 3 Jun 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability in the Simple Network Management Protocol (SNMP) implementation in Cisco ASR 920 Series Aggregation Services Router model ASR920-12SZ-IM could allow an authenticated, remote attacker to cause the device to reload. The vulnerability is due to incorrect handling of data that is returned for Cisco Discovery Protocol queries to SNMP. An attacker could exploit this vulnerability by sending a request for Cisco Discovery Protocol information by using SNMP. An exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.

Weakness: CWE-19

Which versions are affected by CVE-2020-3232?

It affects 1 product.

Products include Cisco Ios Xe.

How do I fix CVE-2020-3232?

No fix has been published for CVE-2020-3232 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-2020-3232 being exploited?

There is no known exploitation of CVE-2020-3232 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-jg2q-fxw2-f6wc.