Vulnerability · Published Sep 23, 2021 · Assigned by cisco

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

Medium 6.0

In plain English

A medium-severity improper access control in Cisco IOS XE SD-WAN Software from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).

Severity (CVSS 3.1)6.0Medium

Exploit odds (30 days)0.3%top 81.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Cisco	Cisco IOS XE SD-WAN Software	n/a

Weakness: CWE-284 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

References

20210922 Cisco IOS XE SD-WAN Software Privilege Escalation Vulnerability vendor-advisory, x_refsource_CISCO