oCERT-2009-006 Android improper package verification when using shared uids
Description:
Android, an open source mobile phone platform, improperly checks developer certificates when installing packages that request the shared user identifier (uid) permission.
Normally, Android applications will be allowed to share a uid if the packages are all signed by the same developer certificate and request permission to do so at install-time. This allows for packages from the same author to share data. Without enforcement of that behavior, it is possible for any application to be installed in such a manner that it gains access to another (existing) application's data.
A patch has been made available by Android.
Affected version:
Android >= 1.5 CRB17, <= 1.5 CRB42
Fixed version:
Android >= 1.5 CRB43
(Android 1.0 and 1.1 are unaffected.)
Credit: Panasonic.
CVE: CVE-2009-1754
Timeline:
2009-05-14: Panasonic reported the issue to the Android Security Team
2009-05-18: Android Security Team requested assistance from oCERT
2009-05-19: oCERT requested CVE assignment
2009-05-22: assigned CVE
2009-05-22: advisory release