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Commit f3f2d7c2 authored by Grace Jia's avatar Grace Jia
Browse files

Fix security vulnerability of TelecomManager#getPhoneAccountsForPackage 

Check calling package and READ_PRIVILEGED_PHONE_STATE to avoid potential
PII expotion.

Bug: 153995334
Test: atest TelecomUnitTests:TelecomServiceImpl
Change-Id: Ie834633dc4031d19af90e922ef0f111c3c8d7cb2
(cherry picked from commit 9d8d0cf3)
parent 24cf84d6

src/com/android/server/telecom/TelecomServiceImpl.java

+17 −0
Original line number Diff line number Diff line
@@ -226,6 +226,23 @@ public class TelecomServiceImpl { 


        @Override

        public List<PhoneAccountHandle> getPhoneAccountsForPackage(String packageName) {

            //TODO: Deprecate this in S

            try {

                enforceCallingPackage(packageName);

            } catch (SecurityException se1) {

                EventLog.writeEvent(0x534e4554, "153995334", Binder.getCallingUid(),

                        "getPhoneAccountsForPackage: invalid calling package");

                throw se1;

            }



            try {

                enforcePermission(READ_PRIVILEGED_PHONE_STATE);

            } catch (SecurityException se2) {

                EventLog.writeEvent(0x534e4554, "153995334", Binder.getCallingUid(),

                        "getPhoneAccountsForPackage: no permission");

                throw se2;

            }



            synchronized (mLock) {

                final UserHandle callingUserHandle = Binder.getCallingUserHandle();

                long token = Binder.clearCallingIdentity();