CVE-2019-1792: Cisco Security Advisory: Cisco Umbrella Cross-Site Scripting Vulnerability

Advisory ID:

cisco-sa-20190417-umbrella-xss

First Published:

2019 April 17 16:00 GMT

Last Updated:

2019 May 8 15:46 GMT

Workarounds:

No workarounds available

CVSS Score:

Base 6.1Click Icon to Copy Verbose Score
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:X/RL:X/RC:X

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Summary

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• 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 Products

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• Vulnerable Products

  This vulnerability affects Cisco Umbrella, which is cloud based. For information about affected software releases, consult the Cisco bug ID(s) at the top of this advisory.

  Products Confirmed Not Vulnerable

  Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability.

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Workarounds

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• There are no workarounds that address this vulnerability.

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Fixed Software

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• Cisco Umbrella has proactively performed the necessary actions that address the vulnerability described in this advisory. Cisco has determined that software updates and/or configuration changes required to fix this vulnerability do not require customer actions because these updates and changes are applied to Cisco-managed infrastructure. Customers may refer to the Help section in the GUI of the cloud service to determine the current remediation status or software version.

  Customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers to help answer any questions if necessary.

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Exploitation and Public Announcements

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• The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

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Source

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• Cisco would like to thank independent security researcher Zachary Swanson for reporting this vulnerability.

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Cisco Security Vulnerability Policy

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• 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.

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Subscribe to Cisco Security Notifications

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Action Links for This Advisory

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Related to This Advisory

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URL

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Revision History

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• Version

  Description

  Section

  Status

  Date

  1.1

  Indicated that Cisco Umbrella is cloud based. Noted that no action is required by the customer to address this vulnerability.

  Vulnerable Products, Fixed Software

  Final

  2019-May-08

  1.0

  Initial public release.

  -

  Final

  2019-April-17

  Show Less

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Legal Disclaimer

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• 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.

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Feedback

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Cisco Security Vulnerability Policy

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• 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.

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Subscribe to Cisco Security Notifications

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Action Links for This Advisory

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Related to This Advisory

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