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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.1342.2 Cisco Umbrella Cross-Site Scripting Vulnerability 9 May 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco Umbrella Publisher: Cisco Systems Operating System: Cisco Impact/Access: Cross-site Scripting -- Remote with User Interaction Resolution: None CVE Names: CVE-2019-1792 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-umbrella-xss Revision History: May 9 2019: No action is required by the customer April 18 2019: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco Umbrella Cross-Site Scripting Vulnerability Priority: Medium Advisory ID: cisco-sa-20190417-umbrella-xss First Published: 2019 April 17 16:00 GMT Last Updated: 2019 May 8 15:46 GMT Version 1.1: Final Workarounds: No workarounds available Cisco Bug IDs: CSCvo32441 CVE-2019-1792 CWE-79 CVSS Score: 6.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:X/RL:X/RC:X Summary o 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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-20190417-umbrella-xss Affected Products o 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. Workarounds o There are no workarounds that address this vulnerability. Fixed Software o 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. Exploitation and Public Announcements o 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. Source o Cisco would like to thank independent security researcher Zachary Swanson for reporting this vulnerability. Cisco Security Vulnerability Policy o 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. Action Links for This Advisory o Understanding Cross-Site Scripting (XSS) Threat Vectors Related to This Advisory o Understanding Cross-Site Scripting Threat Vectors URL o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-20190417-umbrella-xss Revision History o +---------+-------------------------+------------+--------+---------------+ | Version | Description | Section | Status | Date | +---------+-------------------------+------------+--------+---------------+ | | Indicated that Cisco | | | | | | Umbrella is cloud | Vulnerable | | | | 1.1 | based. Noted that no | Products, | Final | 2019-May-08 | | | action is required by | Fixed | | | | | the customer to address | Software | | | | | this vulnerability. | | | | +---------+-------------------------+------------+--------+---------------+ | 1.0 | Initial public release. | - | Final | 2019-April-17 | +---------+-------------------------+------------+--------+---------------+ - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXNOIwGaOgq3Tt24GAQiSqw/9HG5FcJ4N8MYMGk764/UbvoHX3ao96xwO OOs87msq/EMEoG6/1tlTKIVWWFZL70BnCdJjM5iuwLMoVKWqk/Glbm26FqxZznRF v0Q7LZyXxtTVcPlXsjWYVx+bEncXrSpADTvy0YK3SLLXElH056UsVDzp/HTD4El8 eOQpSnDE5gAY1eVOZnC3gADB62EAxuPiPw9yYJDcWn6VBajcH25T4WEOKAMmrhkZ kn7SXIXV0mtyld1jb+DCLc8+xDkfh89LvMiKwH+cQcMsJwhvicumMH/tg6Gbv0f+ WVBjmZAnvx8gSL9bJfSJTu4tHx3myL6rR2fSBtMzryjIKBAmVG9UuXNYqN6onzNi KJKNtbgnbuE8Vy2YH7bI9AWPPyAFRI4OaqRONJc3ymJNu+T2QlM5p3cUifFCsaN2 wiK6c/xX/h3jcz50O9E3lD6Sk4ZO3SViqz14xiumKzFTph+QPImLWaaVLpYkuvLf /bTyUkQI3AKe2b0euFHpqpSra+Du6Qi4e4vyeJDhLcDY9Tntaf+1gOyZbrSSUSgw M41LMN6r3dPUQQP1AQLgFjHB86TX6FnoBZ9InGaitpZZaJldkLAdqcmdSZd2ajIQ MBfxCgYFMd0kU2dqGOg4wf15GKKE3vA4BuB2/ORumNtT1xqmMP/UKETcoyfaWqWT GCTmHi1a5xc= =z54X -----END PGP SIGNATURE-----