cisco-sa-umbrella-head-inject-n4QArJH: Cisco Umbrella Carriage Return Line Feed Injection Vulnerability
A vulnerability in the web server of Cisco Umbrella could allow an unauthenticated, remote attacker to perform a carriage return line feed (CRLF) injection attack against a user of an affected service. The vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by persuading a user to access a crafted URL. A successful exploit could allow the attacker to inject arbitrary HTTP headers into valid HTTP responses sent to the browser of the user. Cisco has released software updates that address this vulnerability. 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-umbrella-head-inject-n4QArJH
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Affected Software
Event History
Frequently Asked Questions
What is the severity of cisco-sa-umbrella-head-inject-n4QArJH?
The cisco-sa-umbrella-head-inject-n4QArJH vulnerability is classified as a medium severity issue due to its potential for CRLF injection attacks.
How do I fix cisco-sa-umbrella-head-inject-n4QArJH?
To fix cisco-sa-umbrella-head-inject-n4QArJH, ensure you apply the latest security updates provided by Cisco for the Umbrella service.
What types of attacks can cisco-sa-umbrella-head-inject-n4QArJH allow?
cisco-sa-umbrella-head-inject-n4QArJH can allow attackers to perform carriage return line feed (CRLF) injection attacks.
Is user authentication required to exploit cisco-sa-umbrella-head-inject-n4QArJH?
No, user authentication is not required to exploit the cisco-sa-umbrella-head-inject-n4QArJH vulnerability.
Which product is affected by the cisco-sa-umbrella-head-inject-n4QArJH vulnerability?
The cisco-sa-umbrella-head-inject-n4QArJH vulnerability affects the Cisco Umbrella product.