cisco-sa-20190417-umbrella-xss: Cisco Umbrella Cross-Site Scripting Vulnerability
A vulnerability in the URL block page of Cisco Umbrella could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user in a network protected by Umbrella. The vulnerability is due to insufficient validation of input parameters passed to that page. An attacker could exploit this vulnerability by persuading a user of the interface to click a maliciously crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or access sensitive browser-based information. 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-20190417-umbrella-xss
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Affected Software
Event History
Frequently Asked Questions
What is the severity of cisco-sa-20190417-umbrella-xss?
The severity of cisco-sa-20190417-umbrella-xss is considered high due to the potential for unauthenticated remote attackers to exploit the vulnerability.
How do I fix cisco-sa-20190417-umbrella-xss?
To fix cisco-sa-20190417-umbrella-xss, update your Cisco Umbrella software to the latest version that addresses the cross-site scripting vulnerability.
What kind of attack does cisco-sa-20190417-umbrella-xss allow?
cisco-sa-20190417-umbrella-xss allows attackers to perform cross-site scripting attacks, potentially compromising user sessions or data.
Who is affected by cisco-sa-20190417-umbrella-xss?
Users of Cisco Umbrella are affected by cisco-sa-20190417-umbrella-xss, especially those accessing the URL block page.
Is authentication required to exploit cisco-sa-20190417-umbrella-xss?
No, authentication is not required to exploit cisco-sa-20190417-umbrella-xss, making it particularly dangerous.