CVE-2020-3423 MEDIUM

CVE-2020-3423: Cisco IOS XE Software Arbitrary Code Execution Vulnerability

Vendor Cisco
Product Cisco IOS XE Software 3.7.0S
Weakness CWE-119
Published September 24, 2020
Last update November 13, 2024

CVSS base score

5.1/10
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Confidentiality Low
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N

What the vulnerability does

01Description

A vulnerability in the implementation of the Lua interpreter that is integrated in Cisco IOS XE Software could allow an authenticated, local attacker to execute arbitrary code with root privileges on the underlying Linux operating system (OS) of an affected device. The vulnerability is due to insufficient restrictions on Lua function calls within the context of user-supplied Lua scripts. An attacker with valid administrative credentials could exploit this vulnerability by submitting a malicious Lua script. When this file is processed, an exploitable buffer overflow condition could occur. A successful exploit could allow the attacker to execute arbitrary code with root privileges on the underlying Linux OS of the affected device.

Key dates

02Disclosure timeline

September 24, 2020 CVE published
November 13, 2024 Record updated