Google Patches 39 Android Vulnerabilities in April Update
Google patches yet another flaw in the libstagefright media library, one of the 15 critical vulnerabilities the company fixed in its latest patch update.Another month and Google is once again patching its libstagefright (Stagefright) media library in Android. Google's April patch update for Android was officially announced on April 4, providing 39 security patches, 15 of which are rated by Google as being critical. Among the critical patches is CVE-2016-0842, which is a remote code execution vulnerability in Stagefright. Flaws in the Android Stagefright media library were first publicly announced in July 2015 by Zimperium zLabs Vice President of Platform Research and Exploitation Joshua Drake. In fact, the Stagefright flaw disclosure was the incident that inspired Google in August 2015 to begin a monthly patch update cycle. Somewhat ironically, in nearly every Android monthly update that Google has released, the company has patched one or more Stagefright flaw, including in last month's update. The libstagefright component is somewhat related to Android's overall Mediaserver component, which is also a big focus in the April update. In the new update, Google has patched the Android Mediaserver for seven remote code execution vulnerabilities (CVE-2016-0835, CVE-2016-0836, CVE-2016-0837, CVE-2016-0838, CVE-2016-0839, CVE-2016-0840 and CVE-2016-084). "During media file and data processing of a specially crafted file, vulnerabilities in mediaserver could allow an attacker to cause memory corruption and remote code execution as the mediaserver process," Google warns in its advisory.
Beyond the critical Mediaserver patches, Google is patching the much maligned Mediaserver component for a high impact privilege escalation vulnerability identified as CVE-2016-2413. Mediaserver is also being patched for four other high impact vulnerabilities (CVE-2016-2416, CVE-2016-2417, CVE-2016-2418 and CVE-2016-2419) that Google refers to as information disclosure flaws in Android.