sends this report from CNET:
Researchers at the University of California Riverside Bourns College of Engineering and the University of Michigan have identified a weakness they believe to exist across Android, Windows, and iOS operating systems that could allow malicious apps to obtain personal information. Although it was tested only on an Android phone, the team believes that the method could be used across all three operating systems because all three share a similar feature: all apps can access a mobile device's shared memory. "The assumption has always been that these apps can't interfere with each other easily," said Zhiyun Qian, an associate professor at UC Riverside. "We show that assumption is not correct and one app can in fact significantly impact another and result in harmful consequences for the user." To demonstrate the method of attack, first a user must download an app that appears benign, such as a wallpaper, but actually contains malicious code. Once installed, the researchers can use it to access the shared memory statistics of any process (PDF), which doesn't require any special privileges.