22 August 2019
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.3207 Cisco Webex Meetings Mobile (iOS) SSL Certificate Validation Vulnerability 22 August 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco Webex Meetings Mobile Publisher: Cisco Systems Operating System: Apple iOS Impact/Access: Read-only Data Access -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-1948 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-webex-ssl-cert - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco Webex Meetings Mobile (iOS) SSL Certificate Validation Vulnerability Priority: Medium Advisory ID: cisco-sa-20190821-webex-ssl-cert First Published: 2019 August 21 16:00 GMT Version 1.0: Final Workarounds: No workarounds availableCisco Bug IDs: CSCvq26812 CVE-2019-1948 CWE-295 CVSS Score: 5.9 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:X/RL:X/RC:X Summary o A vulnerability in Cisco Webex Meetings Mobile (iOS) could allow an unauthenticated, remote attacker to gain unauthorized read access to sensitive data by using an invalid Secure Sockets Layer (SSL) certificate. The vulnerability is due to insufficient SSL certificate validation by the affected software. An attacker could exploit this vulnerability by supplying a crafted SSL certificate to an affected device. A successful exploit could allow the attacker to conduct man-in-the-middle attacks to decrypt confidential information on user connections to the affected software. 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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-20190821-webex-ssl-cert Affected Products o Vulnerable Products At the time of publication, this vulnerability affected Cisco Webex Meetings Mobile (iOS) releases 11.3 to 39.5 if they were running on an iPhone, iPad, or iPod touch. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. 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 When considering software upgrades , customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories and Alerts page , to determine exposure and a complete upgrade solution. In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers. Fixed Releases At the time of publication, Cisco Webex Meetings Mobile (iOS) releases 39.6 and later contained the fix for this vulnerability. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. 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 This vulnerability was found during internal security testing. 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. URL o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-20190821-webex-ssl-cert Revision History o +---------+--------------------------+---------+--------+-----------------+ | Version | Description | Section | Status | Date | +---------+--------------------------+---------+--------+-----------------+ | 1.0 | Initial public release. | - | Final | 2019-August-21 | +---------+--------------------------+---------+--------+-----------------+ - --------------------------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 firstname.lastname@example.org and we will forward your request to the appropriate person. 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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 iQIVAwUBXV354GaOgq3Tt24GAQgBkxAAnnwd5dpQEaeXkLoErMLEVLeEf53P4Ig8 MIvFZn2ZC/x6qX/KgswqwaQ8XPQ7eM8pAkPJ7lMcO7k0fN+6NtuNelrcw0UBjdBE sApQns+MqsbRIDxst9PtT+7qBjoZvQe3TExQ0HKaOEWmpQbNe1NAcVkvji9P5CN8 fKYli/9xKN1grA+EBW7ccg5onbF3z/ZnhPsr5zKxWCfoc8t5mArD3gZhdLKaBoRM hF8qH+J1lu8ok2kWD0IBk/9/8CKWt31JLe9ZRsUC3PE5RFH8WXlZt1LTqRZPUepQ w/5eZVAadgk3SC5IWxJX8K/grZge3lieV8CwOERABputbul0eu640sjg7qTVdI1X HkDF5wkPJQYQp7x0bcAlzv7eQnpYjdJy5iNZzxT46vVU0Ef3oIfVIasvCV/UyrER 4UsheDaoNqqODE2KNzShrtdbxXVfLs80lHoGi/RijYnWSzKyejoZC4EKgRkRuMq3 fHtYq9khdqnTjzy1qVvk/Hp0GjvjfE6fB0zZC2Vk9cg78sITDujan6pPW9rT0vgU ordKiYO5em+kV7E4uP96PB1EEj7t9qJRc3iHKeXBYWucgIemw3r9AylwB6ZVV+33 b7oOhnG4wJpvW8Yb7e1XkrQS60vuWRbVlEpS11H1YHOOFFR9afJEW7vJWYtEsSQ4 7kvFW7igopw= =gT7L -----END PGP SIGNATURE-----