CVE-2020-3190 Cisco IOS XR Software IPsec Packet Processor Denial of Service Vulnerability

Medium 5.8 Published 4 Mar 2020 Updated 15 Nov 2024

Unauthenticated remote attackers can cause a denial of service in IPsec sessions by sending malicious ICMP error messages to Cisco IOS XR devices.

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-2020-3190?

CVE-2020-3190 is a medium-severity denial of service vulnerability in Cisco Ios Xr, published on 4 Mar 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the IPsec packet processor of Cisco IOS XR Software could allow an unauthenticated remote attacker to cause a denial of service (DoS) condition for IPsec sessions to an affected device. The vulnerability is due to improper handling of packets by the IPsec packet processor. An attacker could exploit this vulnerability by sending malicious ICMP error messages to an affected device that get punted to the IPsec packet processor. A successful exploit could allow the attacker to deplete IPsec memory, resulting in all future IPsec packets to an affected device being dropped by the device. Manual intervention is required to recover from this situation.

Weakness: CWE-400

Which versions are affected by CVE-2020-3190?

It affects 1 product.

Products include Cisco Ios Xr.

How do I fix CVE-2020-3190?

No fix has been published for CVE-2020-3190 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-2020-3190 being exploited?

There is no known exploitation of CVE-2020-3190 in the wild and no public exploit code.

All Cisco Ios Xr vulnerabilities

Sources

Also known as GHSA-vf9r-m8g7-gv2c.