Directory traversal vulnerability in the Android debug bridge (aka adb) in Android 4.0.4 allows physically proximate attackers with a direct connection to the target Android device to write to arbitrary files owned by system via a .. (dot dot) in the tar archive headers.
https://github.com/valentineus/hp-slate7-root-kit
https://www.exploit-db.com/exploits/36813/
https://euvd.enisa.europa.eu/vulnerability/EUVD-2014-7801
https://android.googlesource.com/platform/frameworks/base/+/7bc601d%5E%21/#F0
http://www.securityfocus.com/bid/74211
http://seclists.org/fulldisclosure/2015/Apr/51
http://packetstormsecurity.com/files/131510/ADB-Backup-Traversal-File-Overwrite.html