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  • CVE-2016-569 Linux flaw leaves 1.4 billion Android devices vulnerable to hack

CVE-2016-569 Linux flaw leaves 1.4 billion Android devices vulnerable to hack

Pierluigi Paganini August 17, 2016

Experts from Lookout revealed that all Android versions running the Linux Kernel 3.6 to the latest are affected by the CVE-2016-569 Linux flaw.

Recently I wrote about a severe vulnerability (CVE-2016-5696) affecting the Linux version 3.6, deployed in 2012. The flaw was discovered by researchers from the University of California, Riverside, and the U.S. Army Research Laboratory that presented their findings at the USENIX Security 2016 conference.

The TCP/IP networking flaw allows attackers to spot communications between two entities and can be exploited to hijack the traffic and manipulate it if the exchange is not encrypted.

The attack is not considerable a man-in-the-middle attack, the attackers just need to send spoofed packets to both sides of the connection by simply knowing their IP addresses and destination ports.

Linux design flaw attack

According to the experts at Lookout security, the Linux vulnerability affects 80% of Android devices, it appears to have been introduced into Android version 4.4 (also called KitKat) and it is still present in the current versions.

“Lookout recently discovered a serious exploit in TCP reported this week also impacts nearly 80% of Android, or around 1.4 billion devices, based on an install base reported by Statista. The vulnerability lets attackers obtain unencrypted traffic and degrade encrypted traffic to spy on victims.” reported Lookout security in a blog post.

The Linux vulnerability could be exploited by attackers to hijack traffic, inject malware into downloads and web pages, and run a wide range of attacks.

In a classic attack scenario, hackers can inject a malicious JavaScript into unencrypted network traffic and display a message that falsely claims the user has been logged out of his account and request him to provide the login credentials.

A patch for the Linux kernel was available since July 11, 2016, but checking the latest developer preview of Android Nougat, the Google OS is still affected by the flaw.

A Google spokesman confirmed that it is already working on the issue by “taking the appropriate actions.” The Google representative highlighted that the Android security team only rates the risk “moderate.”

Stay Tuned.

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Pierluigi Paganini

(Security Affairs – Linux CVE-2016-569 flaw, Traffic Hijacking)


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Android CVE-2016-569 CVE-2016-5696 DOS Hacking LINUX traffic hijacking

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