CVE-2021-1432: Cisco IOS XE SD-WAN Software Arbitrary Command Execution Vulnerability
First published: Wed Mar 24 2021(Updated: )
A vulnerability in the CLI of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system as the root user. The attacker must be authenticated on the affected device as a low-privileged user to exploit this vulnerability. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by injecting arbitrary commands to a file as a lower-privileged user. The commands are then executed on the device by the root user. A successful exploit could allow the attacker to execute arbitrary commands as the root user.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS XE | =3.15.1xbs | |
| Cisco IOS XE | =3.15.2xbs | |
| Cisco IOS XE | =16.12.1 | |
| Cisco IOS XE | =16.12.1a | |
| Cisco IOS XE | =16.12.1c | |
| Cisco IOS XE | =16.12.1s | |
| Cisco IOS XE | =16.12.1t | |
| Cisco IOS XE | =16.12.1w | |
| Cisco IOS XE | =16.12.1x | |
| Cisco IOS XE | =16.12.1y | |
| Cisco IOS XE | =16.12.1z | |
| Cisco IOS XE | =16.12.1za | |
| Cisco IOS XE | =16.12.2 | |
| Cisco IOS XE | =16.12.2a | |
| Cisco IOS XE | =16.12.2s | |
| Cisco IOS XE | =16.12.2t | |
| Cisco IOS XE | =16.12.3 | |
| Cisco IOS XE | =16.12.3a | |
| Cisco IOS XE | =16.12.3s | |
| Cisco IOS XE | =16.12.4 | |
| Cisco IOS XE | =16.12.4a | |
| Cisco IOS XE | =17.2.1 | |
| Cisco IOS XE | =17.2.1a | |
| Cisco IOS XE | =17.2.1r | |
| Cisco IOS XE | =17.2.1v | |
| Cisco IOS XE SD-WAN |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID?
CVE-2021-1432
What is the severity of CVE-2021-1432?
The severity of CVE-2021-1432 is high with a severity value of 7.3.
Which software is affected by CVE-2021-1432?
Cisco IOS XE SD-WAN Software versions 3.15.1xbs, 3.15.2xbs, 16.12.1-16.12.1za, 16.12.2-16.12.2a, 16.12.3-16.12.3a, 16.12.4-16.12.4a, 17.2.1-17.2.1v, and Cisco IOS XE SD-WAN are affected.
How does CVE-2021-1432 allow an attacker to exploit the vulnerability?
CVE-2021-1432 allows an authenticated, local attacker to execute arbitrary commands on the affected device as the root user.
Is authentication required to exploit CVE-2021-1432?
Yes, the attacker must be authenticated on the affected device as a low-privileged user to exploit CVE-2021-1432.
- collector/nvd-index
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/weakness
- agent/title
- agent/last-modified-date
- agent/severity
- agent/tags
- agent/author
- agent/description
- agent/first-publish-date
- agent/event
- vendor/cisco
- canonical/cisco ios xe
- version/cisco ios xe/3.15.1xbs
- version/cisco ios xe/3.15.2xbs
- version/cisco ios xe/16.12.1
- version/cisco ios xe/16.12.1a
- version/cisco ios xe/16.12.1c
- version/cisco ios xe/16.12.1s
- version/cisco ios xe/16.12.1t
- version/cisco ios xe/16.12.1w
- version/cisco ios xe/16.12.1x
- version/cisco ios xe/16.12.1y
- version/cisco ios xe/16.12.1z
- version/cisco ios xe/16.12.1za
- version/cisco ios xe/16.12.2
- version/cisco ios xe/16.12.2a
- version/cisco ios xe/16.12.2s
- version/cisco ios xe/16.12.2t
- version/cisco ios xe/16.12.3
- version/cisco ios xe/16.12.3a
- version/cisco ios xe/16.12.3s
- version/cisco ios xe/16.12.4
- version/cisco ios xe/16.12.4a
- version/cisco ios xe/17.2.1
- version/cisco ios xe/17.2.1a
- version/cisco ios xe/17.2.1r
- version/cisco ios xe/17.2.1v
- canonical/cisco ios xe sd-wan