Galaxy SIII open to full lockscreen bypass

Days after a mobile enthusiast discovered a partial lockscreen bypass on a Galaxy Note II, another user has found a way to bypass the lock on a Galaxy S3 and gain full access.

Like the hacks reported earlier this week, Sean McMillan found an entry point through the Emergency Call feature.

From there, opening the phone without knowing the passcode, requires pressing the ‘Home’ (physical) button once and then hitting the power button “quickly”. That should be enough to give full access to the device’s home screen, McMillan said in a post on on Tuesday.

“Sometimes this method works straight away, other times it can take more than 20 attempts,” McMillan wrote.

McMillan bypassed the lockscreen on a Galaxy 3 model number GT-I9300, running Android 4.1.2.

<i>ZDNet</i>, which first reported McMillan’s discovery, confirmed the method worked on a Galaxy S3 running the same version of Android and found that after executing the bypass, the phone no longer requires a PIN, password or pattern to access the home screen.

The bug appears to work on S3s distributed by carriers in the US too, as well as older version numbers. <i>The Verge</i> used the method to successfully bypass a Sprint Galaxy S3 running 4.1.1, and the bug persisted until the device was rebooted.

The bug discovered by McMillan is on par with a one found last month in iOS 6.1, which also relied on a trick using the Emergency Call.

Follow @CSO_Australia and sign up to the CSO Australia newsletter.

Join the CSO newsletter!

Error: Please check your email address.

Tags Galaxy SIIIsecurity

More about CSOGalaxySprint

Show Comments

Featured Whitepapers

Editor's Recommendations

Solution Centres

Stories by Liam Tung

Latest Videos

  • 150x50

    CSO Webinar: The Human Factor - Your people are your biggest security weakness

    ​Speakers: David Lacey, Researcher and former CISO Royal Mail David Turner - Global Risk Management Expert Mark Guntrip - Group Manager, Email Protection, Proofpoint

    Play Video

  • 150x50

    CSO Webinar: Current ransomware defences are failing – but machine learning can drive a more proactive solution

    Speakers • Ty Miller, Director, Threat Intelligence • Mark Gregory, Leader, Network Engineering Research Group, RMIT • Jeff Lanza, Retired FBI Agent (USA) • Andy Solterbeck, VP Asia Pacific, Cylance • David Braue, CSO MC/Moderator What to expect: ​Hear from industry experts on the local and global ransomware threat landscape. Explore a new approach to dealing with ransomware using machine-learning techniques and by thinking about the problem in a fundamentally different way. Apply techniques for gathering insight into ransomware behaviour and find out what elements must go into a truly effective ransomware defence. Get a first-hand look at how ransomware actually works in practice, and how machine-learning techniques can pick up on its activities long before your employees do.

    Play Video

  • 150x50

    CSO Webinar: Get real about metadata to avoid a false sense of security

    Speakers: • Anthony Caruana – CSO MC and moderator • Ian Farquhar, Worldwide Virtual Security Team Lead, Gigamon • John Lindsay, Former CTO, iiNet • Skeeve Stevens, Futurist, Future Sumo • David Vaile - Vice chair of APF, Co-Convenor of the Cyberspace Law And Policy Community, UNSW Law Faculty This webinar covers: - A 101 on metadata - what it is and how to use it - Insight into a typical attack, what happens and what we would find when looking into the metadata - How to collect metadata, use this to detect attacks and get greater insight into how you can use this to protect your organisation - Learn how much raw data and metadata to retain and how long for - Get a reality check on how you're using your metadata and if this is enough to secure your organisation

    Play Video

  • 150x50

    CSO Webinar: How banking trojans work and how you can stop them

    CSO Webinar: How banking trojans work and how you can stop them Featuring: • John Baird, Director of Global Technology Production, Deutsche Bank • Samantha Macleod, GM Cyber Security, ME Bank • Sherrod DeGrippo, Director of Emerging Threats, Proofpoint (USA)

    Play Video

  • 150x50

    IDG Live Webinar:The right collaboration strategy will help your business take flight

    Speakers - Mike Harris, Engineering Services Manager, Jetstar - Christopher Johnson, IT Director APAC, 20th Century Fox - Brent Maxwell, Director of Information Systems, THE ICONIC - IDG MC/Moderator Anthony Caruana

    Play Video

More videos

Blog Posts

Market Place