Summary
-
A vulnerability in the self-service portal of Cisco Duo could allow an unauthenticated, remote attacker to inject arbitrary commands into emails that are sent by the service.
This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by injecting arbitrary commands into a portion of an email that is sent by the service. A successful exploit could allow the attacker to send emails that contain malicious content to unsuspecting users.
Cisco Duo has addressed this vulnerability in the service, and no customer action is necessary to update on-premises software or devices. There are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-duo-ssp-cmd-inj-RCmYrNA
Affected Products
-
This vulnerability affects the Cisco Duo self-service portal, which is cloud based.
Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability.
Workarounds
Fixed Software
-
Cisco has addressed this vulnerability in the Cisco Duo self-service portal, which is cloud based. No user action is required.
Customers who need additional information are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.
Exploitation and Public Announcements
Source
Cisco Security Vulnerability Policy
-
To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
Related to This Advisory
URL
Revision History
-
| Version |
Description |
Section |
Status |
Date |
| 1.0 |
Initial public release. |
– |
Final |
2025-MAY-21 |
Show Less
Legal Disclaimer
-
THIS DOCUMENT IS PROVIDED ON AN “AS IS” BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.
