CBC Gem Unencrypted Transit

Credit: David Coomber
Risk: Medium
Local: No
Remote: Yes

CBC Gem Android & iOS Applications - Unencrypted Analytics -- https://www.info-sec.ca/advisories/CBC-Gem.html Overview "Watch hundreds of shows on demand and stream live news and sports, all for free. With CBC Gem, you can stream current episodes and past seasons of comedies, dramas, documentaries and more." (https://play.google.com/store/apps/details?id=ca.cbc.android.cbctv) (https://apps.apple.com/ca/app/cbc-gem/id422191503) Issue The CBC Gem Android & iOS applications (Android version 9.24.0 and below, iOS version 9.24.0 and below) sends potentially sensitive information such as device model & resolution, mobile carrier, days since first use, days since last use, total number of app launches, number of app launches since upgrade, and previous app session length, unencrypted to both first and third party sites (Adobe Marketing Cloud, ScorecardResearch). Impact An attacker who can monitor network traffic could capture potentially sensitive information about the user's device and viewing habits without their knowledge. Timeline October 7, 2019 - Provided additional information about my research on unencrypted analytics to Apple via product-security@apple.com October 17, 2019 - Attempted to obtain a security contact via a CBC support form October 17, 2019 - CBC provided a contact for the mobile application October 17, 2019 - Provided the details to CBC October 17, 2019 - CBC confirmed receipt of the information October 29, 2019 - Asked CBC if they were able to confirm the issue October 31, 2019 - CBC confirmed the issue and stated that they are working on a fix Solution Upgrade to Android version 9.24.1 or iOS version 9.26.0

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