Last month security researcher Samy Kamkar announced a vulnerability that allowed him to remotely unlock OnStar-enabled GM cars. While that issue has been fixed, it looks like the same vulnerability found in OnStar is also present in BMW Remote, Mercedes’ mbrace and Chrysler’s Uconnect. Kamkar told Engadget via email, “the issue itself is the same exact SSL certificate issue that affected OnStar/GM (which they’ve resolved two weeks ago). It was barely any tweaking of the original system — a few lines of code to add support per vehicle.” Uh oh.
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https://www.engadget.com/2015/08/13/ownstar-hack/