Menu
Many Android devices vulnerable to session hijacking through the default browser

Many Android devices vulnerable to session hijacking through the default browser

The default browser in older, widely used versions of Android contains a vulnerability that can be used to bypass the same-origin policy

The default browser in Android versions older than 4.4 has a vulnerability that allows malicious websites to bypass a critical security mechanism and take control of a user's authenticated sessions on other sites.

The issue is a universal cross-site scripting flaw that stems from how the browser handles javascript: strings preceded by a null byte character. When encountering such a string, the browser fails to enforce the same-origin policy, a security control that prevents scripts running in the context of one site from interacting with the content of other websites.

"What this means is, any arbitrary website (say, one controlled by a spammer or a spy) can peek into the contents of any other web page," said Tod Beardsley, technical lead for the Metasploit Framework project, in a blog post Monday. "Imagine you went to an attacker's site while you had your webmail open in another window -- the attacker could scrape your e-mail data and see what your browser sees. Worse, he could snag a copy of your session cookie and hijack your session completely, and read and write webmail on your behalf."

The security flaw was discovered by independent security researcher Rafay Baloch, who published a proof-of-concept exploit on his blog Aug. 31. However, the bug's disclosure remained largely unnoticed until the Metasploit team developed a module that can be used to steal authentication cookies from users who open a malicious page.

"Research and testing is still ongoing to plumb the depths of this issue," Beardsley said. "We'd like to pin down exactly when the bug was fixed, and to determine just how widespread this vector really is. After all, pre-4.4 builds of Android account for about 75% of the total Android ecosystem today."

Users who believe they might be affected are advised to install and use one of the other browsers available for Android such as Google Chrome, Mozilla Firefox, Dolphin Browser or Opera, which are not affected by this issue.


Follow Us

Join the newsletter!

Error: Please check your email address.

Tags online safetyGooglesecuritymobile securityExploits / vulnerabilities

Featured

Slideshows

HP channel recognised at 2017 Partner Awards

HP channel recognised at 2017 Partner Awards

The HP Partner Awards 2017 at Shed 10 kicked off with an AMD-sponsored hackers lounge, a mysterious gaming style area filled with dry ice and red lasers, the waiters wearing Mr Robot style masks.

HP channel recognised at 2017 Partner Awards
Tech industry comes together as Lexel celebrates turning 30

Tech industry comes together as Lexel celebrates turning 30

Leading figures within the technology industry across New Zealand came together to celebrate 30 years of success for Lexel Systems, at a milestone birthday occasion at St Matthews in the City.​

Tech industry comes together as Lexel celebrates turning 30
HP re-imagines education through Auckland event launch

HP re-imagines education through Auckland event launch

HP New Zealand held an inaugural Evolve Education event at Aotea Centre in Auckland, welcoming over 70 principals, teachers and education experts to explore ways of shaping and enhancing learning using technology.

HP re-imagines education through Auckland event launch
Show Comments