CVE-2021-1284: Cisco SD-WAN vManage Software Authentication Bypass Vulnerability
First published: Thu May 06 2021(Updated: )
A vulnerability in the web-based messaging service interface of Cisco SD-WAN vManage Software could allow an unauthenticated, adjacent attacker to bypass authentication and authorization and modify the configuration of an affected system. To exploit this vulnerability, the attacker must be able to access an associated Cisco SD-WAN vEdge device. This vulnerability is due to insufficient authorization checks. An attacker could exploit this vulnerability by sending crafted HTTP requests to the web-based messaging service interface of an affected system. A successful exploit could allow the attacker to gain unauthenticated read and write access to the affected vManage system. With this access, the attacker could access information about the affected vManage system, modify the configuration of the system, or make configuration changes to devices that are managed by the system.
Credit: ykramarz@cisco.com ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Catalyst SD-WAN Manager | >=20.4<20.4.1 | |
| Cisco Catalyst SD-WAN Manager | >=20.5<20.5.1 | |
| Cisco SD-WAN vManage | <20.3.1 |
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Reference Links
Frequently Asked Questions
What is CVE-2021-1284?
CVE-2021-1284 is a vulnerability in the web-based messaging service interface of Cisco SD-WAN vManage Software, which could allow an unauthenticated attacker to bypass authentication and modify system configuration.
What is the severity of CVE-2021-1284?
The severity of CVE-2021-1284 is high, with a CVSS score of 8.8.
How can an attacker exploit CVE-2021-1284?
To exploit CVE-2021-1284, the attacker must be able to gain network access to an affected system.
Which versions of Cisco SD-WAN vManage Software are affected by CVE-2021-1284?
Cisco Catalyst SD-WAN Manager versions 20.4 and 20.5, as well as Cisco SD-WAN vManage version up to 20.3.1, are affected by CVE-2021-1284.
How can I mitigate CVE-2021-1284?
Cisco has released software updates to address CVE-2021-1284. It is recommended to upgrade to the fixed software version.
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