GalaxyS3I9300PrivacySecurityEvaluation » History » Version 15
Wolfgang Wiedmeyer, 01/25/2017 08:55 PM
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Note that this information may or may not be exhaustive.
It also may or may not contain all known issues or good point about this device.
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h2. General freedom issues on the Galaxy S 3 (I9300):
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* The bootloader is proprietary and signed.
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* Some peripherals do require proprietary firmwares to work, some of which have to be loaded by the system: See the "Missing without non-free firmwares" status in [[ReplicantStatus]].
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* The bootrom is the first code that is executed, it's stored in a read-only memory: see "freedom-privacy-security-issues":http://www.replicant.us/freedom-privacy-security-issues.php for more details.
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* The hardware is proprietary, and we are not aware if any its schematics is available somewhere on the Internet.
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h2. Modem related:
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The modem runs non-free software, which is loaded but not shipped by Replicant.
* When using flight mode, The main CPU has to ask the modem to power itself off.
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* The modem is isolated:
** It doesn't use shared memory with the CPU, instead it uses an "HSIC" bus.
** We are not aware of it being able to access the GPS, but it wouldn't be surprising if it still could (by having a direct connection to it: since no schematics are publicly available we have easy no way to check).
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** It has no access to the other CPU peripherals.
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* "Terminal profile":https://terminal-profile.osmocom.org/decode.php?tp=ffffffff7f1f00dfff00001fa2010a860749000000000000000000000010
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* Investigate its terminal profile
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* Investigate TrustZone and other potential issues with the bootloader.
* Investigate device factory reset security in both Replicant and its recovery (Does it really wipes files?)
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* Investigate the flash layout, EMMC partitions, EMMC firmware