CVE-2018-0471: Cisco IOS XE Software Cisco Discovery Protocol Memory Leak Vulnerability

Published Oct 5, 2018

Updated

A vulnerability in the Cisco Discovery Protocol (CDP) module of Cisco IOS XE Software Releases 16.6.1 and 16.6.2 could allow an unauthenticated, adjacent attacker to cause a memory leak that may lead to a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain CDP packets. An attacker could exploit this vulnerability by sending certain CDP packets to an affected device. A successful exploit could cause an affected device to continuously consume memory and eventually result in a memory allocation failure that leads to a crash, triggering a reload of the affected device.

Affected Software

2 affected components

Cisco IOS XE=16.6.1

Cisco IOS XE=16.6.2

Event History

Oct 5, 2018

CVE Published

via MITRE·02:00 PM

Data Sourced

via MITRE·02:00 PM

DescriptionWeakness

Frequently Asked Questions

What is the severity of CVE-2018-0471?

The severity of CVE-2018-0471 is considered medium due to the potential for a denial of service condition.

How do I fix CVE-2018-0471?

To fix CVE-2018-0471, upgrade to a patched version of Cisco IOS XE, specifically 16.6.3 or later.

Who is affected by CVE-2018-0471?

CVE-2018-0471 affects devices running Cisco IOS XE Software versions 16.6.1 and 16.6.2.

What type of attack does CVE-2018-0471 enable?

CVE-2018-0471 enables an unauthenticated, adjacent attacker to exploit a memory leak vulnerability.

What impact does CVE-2018-0471 have on systems?

CVE-2018-0471 can lead to a denial of service condition, causing affected systems to become unresponsive.