CVE-2021-34724 MEDIUM

CVE-2021-34724: Cisco IOS XE SD-WAN Software Privilege Escalation Vulnerability

Vendor Cisco
Product Cisco IOS XE SD-WAN Software
Weakness CWE-284
Published September 23, 2021
Last update November 7, 2024

CVSS base score

6.0/10
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

A vulnerability in the Cisco IOS XE SD-WAN Software CLI could allow an authenticated, local attacker to elevate privileges and execute arbitrary code on the underlying operating system as the root user. An attacker must be authenticated on an affected device as a PRIV15 user. This vulnerability is due to insufficient file system protection and the presence of a sensitive file in the bootflash directory on an affected device. An attacker could exploit this vulnerability by overwriting an installer file stored in the bootflash directory with arbitrary commands that can be executed with root-level privileges. A successful exploit could allow the attacker to read and write changes to the configuration database on the affected device.

Key dates

02Disclosure timeline

September 23, 2021 CVE published
November 7, 2024 Record updated