Description
packages/Keyguard/res/layout/keyguard_password_view.xml in Lockscreen in Android 5.x before 5.1.1 LMY48M does not restrict the number of characters in the passwordEntry input field, which allows physically proximate attackers to bypass intended access restrictions via a long password that triggers a SystemUI crash, aka internal bug 22214934.
References
- [android-security-updates] 20150909 Nexus Security Bulletin (September 2015) mailing-list
- https://code.google.com/p/android/issues/detail?id=178139
- http://sites.utexas.edu/iso/2015/09/15/android-5-lockscreen-bypass/
- https://android.googlesource.com/platform/frameworks/base/+/8fba7e6931245a17215e0e740e78b45f6b66d590