CVE-2024-20259 Memory corruption in Cisco IOS XE Software

High 8.6 Published 27 Mar 2024 Updated 27 Aug 2024

A remote attacker can cause a denial of service on Cisco IOS XE devices by sending a crafted DHCP request when endpoint analytics are enabled.

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-2024-20259?

CVE-2024-20259 is a high-severity memory corruption vulnerability in Cisco Ios Xe, published on 27 Mar 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the DHCP snooping feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to a crafted IPv4 DHCP request packet being mishandled when endpoint analytics are enabled. An attacker could exploit this vulnerability by sending a crafted DHCP request through an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. Note: The attack vector is listed as network because a DHCP relay anywhere on the network could allow exploits from networks other than the adjacent one.

Weakness: CWE-787, CWE-122

Which versions are affected by CVE-2024-20259?

It affects 1 product.

Products include Cisco Ios Xe.

How do I fix CVE-2024-20259?

No fix has been published for CVE-2024-20259 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-2024-20259 being exploited?

There is no known exploitation of CVE-2024-20259 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-3rfg-x7h2-v33m.