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U.S. Government Warns iOS Users About 'Masque Attack' Vulnerability
Written by the National Cybersecurity and Communications Integration Center and the U.S. Computer Emergency Readiness Teams, the bulletin outlines how Masque Attack spreads -- luring users to install an untrusted app through a phishing link -- and what a malicious app is capable of doing.
An app installed on an iOS device using this technique may:The post also advises iOS users to protect themselves by avoiding apps that have been installed from sources other than the App Store or an organization they're affiliated with, avoiding tapping "Install" on third-party pop-ups when viewing web pages, and tapping "Don't Trust" on any iOS app that shows an "Untrusted App Developer Alert."
-Mimic the original app's login interface to steal the victim's login credentials.
-Access sensitive data from local data caches.
-Perform background monitoring of the user's device.
-Gain root privileges to the iOS device.
-Be indistinguishable from a genuine app.
Computer security alerts issued by the government are fairly rare, and only 13 have been sent over the course of 2014. Other vulnerabilities that have prompted alerts include Heartbleed and an SSL 3.0 flaw called "Poodle."
FireEye, the team that discovered Masque Attack, has notified Apple about the vulnerability, but it has not been patched in the recent iOS 8.1.1 beta thus far. It also affects iOS 7.1.1, 7.1.2, 8.0, and 8.1, and as of today, Apple has not yet commented on Masque Attack.
Masque Attack, along with WireLurker, another vulnerability outlined earlier this month, is unlikely to affect the average iOS user so long as Apple's security features are not bypassed. Masque Attack works by circumventing the iOS App Store to install apps, while WireLurker is similar, infecting machines via third-party software downloaded outside of the Mac App Store.
Both WireLurker and Masque Attack can be avoided by staying away from suspicious apps and avoiding links that prompt users to install apps outside of Apple's App Stores.