A collection of vulnerabilities affecting Samsung’s Discover My Cell may have been chained to carry out numerous kinds of actions on a compromised smartphone, a researcher from Portugal-based cybersecurity companies supplier Char49 revealed on the DEF CON convention on Friday.
Discover My Cell is designed to assist customers discover misplaced Samsung telephones. It can be used to remotely lock a tool, block entry to Samsung Pay, and utterly wipe the cellphone if it “falls into the incorrect fingers.”
Based on Char49, there have been a complete of 4 vulnerabilities in Discover My Cell parts they usually may have been exploited by a malicious app put in on the focused machine.
Pedro Umbelino, the Char49 researcher who discovered the issues, informed SecurityWeek that the malicious app would solely require entry to the machine’s SD card with a view to exploit the primary vulnerability within the chain and create a file that enables the attacker to intercept communications with backend servers.
Profitable exploitation of the vulnerabilities would have allowed a malicious app to carry out any motion that the Discover My Cell app may carry out, together with power a manufacturing facility reset, wipe knowledge, observe the machine’s location in actual time, retrieve cellphone calls and messages, and lock and unlock the cellphone.
The exploit was efficiently reproduced on Samsung Galaxy S7, S8 and S9+ units earlier than the seller launched a patch.
Char49 informed SecurityWeek that the vulnerabilities had been discovered greater than a 12 months in the past, however Samsung solely patched them in late October 2019, and the safety firm needed to attend for 9 months earlier than making particulars public.
“This flaw, after setup, may be simply exploited and with extreme implications for the person and with a doubtlessly catastrophic impression: everlasting denial of service through cellphone lock, full knowledge loss with manufacturing facility reset (sdcard included), critical privateness implication through IMEI and placement monitoring in addition to name and SMS log entry,” the corporate defined in a technical report describing every of the vulnerabilities.
It added, “The [Find My Mobile] utility shouldn’t have arbitrary parts publicly accessible and in an exported state. If completely obligatory, for instance if different packages name these parts, then they need to be protected with correct permissions. Testing code that depends on the existence of information in public locations ought to be eradicated.”
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