CVE-2021-1371: Cisco IOS XE SD-WAN Software Console Privilege Escalation Vulnerability
First published: Wed Mar 24 2021(Updated: )
A vulnerability in the role-based access control of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker with read-only privileges to obtain administrative privileges by using the console port when the device is in the default SD-WAN configuration. This vulnerability occurs because the default configuration is applied for console authentication and authorization. An attacker could exploit this vulnerability by connecting to the console port and authenticating as a read-only user. A successful exploit could allow a user with read-only permissions to access administrative privileges.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS XE SD-WAN | =17.2.0 | |
| Cisco Cloud Services Router 1000v | ||
| Cisco 1100 Integrated Services Router | ||
| Cisco 1101 Integrated Services Router | ||
| Cisco 1109 Integrated Services Router | ||
| Cisco 1111x Integrated Services Router | ||
| Cisco 111x Integrated Services Router | ||
| Cisco 1120 Integrated Services Router | ||
| Cisco 1160 Integrated Services Router | ||
| Cisco 4221 Integrated Services Router | ||
| Cisco 4321 Integrated Services Router | ||
| Cisco 4331 Integrated Services Router | ||
| Cisco 4351 Integrated Services Router | ||
| Cisco 4431 Integrated Services Router | ||
| Cisco 4451 Integrated Services Router | ||
| Cisco 4461 Integrated Services Router | ||
| Cisco ASR 1000 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is CVE-2021-1371?
CVE-2021-1371 is a vulnerability in the role-based access control of Cisco IOS XE SD-WAN Software that could allow an authenticated, local attacker with read-only privileges to obtain administrative privileges.
How does CVE-2021-1371 occur?
CVE-2021-1371 occurs when an attacker uses the console port of the device while it is in the default SD-WAN configuration.
What is the severity of CVE-2021-1371?
CVE-2021-1371 has a severity rating of 6.6 (high).
Which software versions are affected by CVE-2021-1371?
Cisco IOS XE SD-WAN Software version 17.2.0 is affected by CVE-2021-1371.
How can CVE-2021-1371 be fixed?
To fix CVE-2021-1371, it is recommended to apply the necessary updates or patches provided by Cisco.
- collector/nvd-index
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/references
- agent/last-modified-date
- agent/title
- agent/weakness
- agent/severity
- agent/tags
- agent/description
- agent/first-publish-date
- agent/event
- vendor/cisco
- canonical/cisco ios xe sd-wan
- version/cisco ios xe sd-wan/17.2.0
- canonical/cisco cloud services router 1000v
- canonical/cisco 1100 integrated services router
- canonical/cisco 1101 integrated services router
- canonical/cisco 1109 integrated services router
- canonical/cisco 1111x integrated services router
- canonical/cisco 111x integrated services router
- canonical/cisco 1120 integrated services router
- canonical/cisco 1160 integrated services router
- canonical/cisco 4221 integrated services router
- canonical/cisco 4321 integrated services router
- canonical/cisco 4331 integrated services router
- canonical/cisco 4351 integrated services router
- canonical/cisco 4431 integrated services router
- canonical/cisco 4451 integrated services router
- canonical/cisco 4461 integrated services router
- canonical/cisco asr 1000