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CVE-2020-3118

Status Candidate

Overview

A vulnerability in the Cisco Discovery Protocol implementation for Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to execute arbitrary code or cause a reload on an affected device. The vulnerability is due to improper validation of string input from certain fields in Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to cause a stack overflow, which could allow the attacker to execute arbitrary code with administrative privileges on an affected device. Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).

Related Files

Cisco Discovery Protocol (CDP) Remote Device Takeover
Posted Feb 5, 2020
Authored by Barak Hadad, Yuval Sarel, Ben Seri | Site armis.com

Armis has discovered five critical, zero-day vulnerabilities in various implementations of the Cisco Discovery Protocol (CDP) that can allow remote attackers to completely take over devices.

tags | advisory, remote, vulnerability, protocol
systems | cisco
advisories | CVE-2020-3110, CVE-2020-3111, CVE-2020-3118, CVE-2020-3119, CVE-2020-3120
SHA-256 | 5e3050fbeb1f22ebf589d261aab1741e8ff40e062b5d1b2a93dee1b7c870f8c4
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