CVE-2021-1381: Cisco IOS XE Software Active Debug Code Vulnerability
First published: Wed Mar 24 2021(Updated: )
A vulnerability in Cisco IOS XE Software could allow an authenticated, local attacker with high privileges or an unauthenticated attacker with physical access to the device to open a debugging console. The vulnerability is due to insufficient command authorization restrictions. An attacker could exploit this vulnerability by running commands on the hardware platform to open a debugging console. A successful exploit could allow the attacker to access a debugging console.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS XE Web UI | =16.11.1 | |
| Cisco IOS XE Web UI | =16.11.1a | |
| Cisco IOS XE Web UI | =16.11.1b | |
| Cisco IOS XE Web UI | =16.11.1c | |
| Cisco IOS XE Web UI | =16.11.1s | |
| Cisco IOS XE Web UI | =16.11.2 | |
| Cisco IOS XE Web UI | =16.12.1 | |
| Cisco IOS XE Web UI | =16.12.1a | |
| Cisco IOS XE Web UI | =16.12.1c | |
| Cisco IOS XE Web UI | =16.12.1s | |
| Cisco IOS XE Web UI | =16.12.1t | |
| Cisco IOS XE Web UI | =16.12.1w | |
| Cisco IOS XE Web UI | =16.12.1x | |
| Cisco IOS XE Web UI | =16.12.1y | |
| Cisco IOS XE Web UI | =16.12.1z | |
| Cisco IOS XE Web UI | =16.12.1za | |
| Cisco IOS XE Web UI | =16.12.2 | |
| Cisco IOS XE Web UI | =16.12.2a | |
| Cisco IOS XE Web UI | =16.12.2s | |
| Cisco IOS XE Web UI | =16.12.2t | |
| Cisco IOS XE Web UI | =16.12.3 | |
| Cisco IOS XE Web UI | =16.12.3a | |
| Cisco IOS XE Web UI | =16.12.3s | |
| Cisco IOS XE Web UI | =16.12.4 | |
| Cisco IOS XE Web UI | =16.12.4a | |
| Cisco IOS XE Web UI | =17.1.1 | |
| Cisco IOS XE Web UI | =17.1.1a | |
| Cisco IOS XE Web UI | =17.1.1s | |
| Cisco IOS XE Web UI | =17.1.1t | |
| Cisco IOS XE Web UI | =17.1.2 | |
| Cisco IOS XE Web UI | =17.2.1 | |
| Cisco IOS XE Web UI | =17.2.1a | |
| Cisco IOS XE Web UI | =17.2.1r | |
| Cisco IOS XE Web UI | =17.2.1v | |
| Cisco IOS XE Web UI | =17.2.2 | |
| Cisco IOS XE Web UI | =17.2.3 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-1381?
The severity of CVE-2021-1381 is rated as high due to the potential for unauthorized access to sensitive debugging information.
What kind of access is required to exploit CVE-2021-1381?
CVE-2021-1381 can be exploited by an authenticated attacker with high privileges or an unauthenticated attacker with physical access to the device.
How do I fix CVE-2021-1381?
To remediate CVE-2021-1381, users should apply the latest security patches provided by Cisco for their affected IOS XE software versions.
Which Cisco IOS XE software versions are affected by CVE-2021-1381?
CVE-2021-1381 affects multiple versions of Cisco IOS XE, including 16.11.1 and 17.2.3 among others.
What are the potential implications of CVE-2021-1381?
The implications of CVE-2021-1381 include unauthorized access to a debugging console, which could lead to further exploitation of the device.
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- agent/event
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/source
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- agent/software-canonical-lookup-request
- vendor/cisco
- canonical/cisco ios xe web ui
- version/cisco ios xe web ui/16.11.1
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