{"id":44715,"date":"2015-07-30T10:49:25","date_gmt":"2015-07-30T17:49:25","guid":{"rendered":"https:\/\/blogs.mcafee.com\/?p=44715"},"modified":"2025-08-07T00:43:39","modified_gmt":"2025-08-07T07:43:39","slug":"android-stagefright-vulnerability","status":"publish","type":"post","link":"https:\/\/www.mcafee.com\/blogs\/mobile-security\/android-stagefright-vulnerability\/","title":{"rendered":"A Simple Text Puts 95% of Android Devices in the Hotseat"},"content":{"rendered":"

Earlier this week, a new vulnerability was discovered, potentially afflicting up to 950 million Android devices. This accounts for nearly all of active Android users. And what\u2019s more shocking, it all started with a text message.<\/p>\n

Allow me to introduce you to \u201cStagefright,\u201d the latest vulnerability to make cybersecurity headlines. Stagefright, a security hole freshly discovered by a group of cybersecurity researchers<\/a>, is being hailed as the next Heartbleed \u2014 a serious vulnerability that compromised most Internet users a year ago.<\/p>\n

While Stagefright may not be as expansive as Heartbleed, it\u2019s still a very severe vulnerability and shares some similarities with Heartbleed. Cybercriminals can easily use Stagefright to steal personal data stored on your smartphone, including contacts, photos, and other sensitive data. Like Heartbleed, Stagefright affects a very large number of people \u2014 up to 95 percent of Android<\/a> users. And, much like Heartbleed, most users will have to wait for large organizations and device manufacturers to issue updates to fix the vulnerabilities.<\/p>\n

So here\u2019s the nitty-gritty:<\/p>\n

Stagefright is the nickname for Android\u2019s media library<\/a> \u2014 a portion of the Android operating system responsible for how you interact with things like music and video on your device. This attack exploits a few weaknesses within that library, which is used by many other applications for viewing and rendering multimedia content. Some applications that handle communication on your device, such as SMS and MMS messages, use the library to load and run such median content sent over multimedia messaging services (MMSs).<\/p>\n

MMSs are programs used to send and receive text, photo, video and audio messages, and are prevalent throughout mobile devices. Stagefright exploits those systems to deliver malicious code, which can then siphon data from a targeted device and perpetuate itself. We typically call this type of attack a computer worm<\/a>.<\/p>\n

According to researchers, cybercriminals needn\u2019t do too much to successfully deploy the attack. All they need to do is to send a malicious text message to a vulnerable device \u2013 that is, any Android device running Android 2.2 or higher. In some cases, this vulnerability requires the user to open a multimedia message for the attack to be successful. In other cases, the act of merely receiving a message is enough to infect a device.<\/p>\n

The fact that this vulnerability requires so little user input in order to deliver its payload is one of the reasons why it\u2019s so dangerous. Another reason: it\u2019ll take some time to fix.<\/p>\n

While Google and a handful of Android device manufacturers have already pushed out updates fixing the Stagefright vulnerability, several other device manufacturers haven\u2019t \u2014 or at least not yet. Since each Android device model is unique, it may take some time for manufacturers to create and distribute updates.<\/p>\n

Tips to Protect Yourself from Stagefright Attacks<\/h2>\n

But that doesn\u2019t mean Android users are completely helpless. There are a few tips and tricks users can implement to protect themselves from Stagefright attacks. Let\u2019s take a look at a few now:<\/p>\n