Lenovo fixes hard-coded password in file-sharing utility

The password, "12345678," couldn't be changed in older versions of SHAREit

Lenovo has patched several software flaws in a file-sharing utility, which could allow attackers to browse and make copies of files.

The flaws were found by Core Security, which described in an advisory a lengthy back and forth dialog with Lenovo starting in late October over the problems.

The affected application is SHAREit, which is designed to let people share files from Windows computers or Android devices over a local LAN or through a Wi-Fi hotspot that's created.

SHAREit is preloaded on Lenovo devices, including its ThinkPad and IdeaPad notebooks and other mobile devices. The vulnerable SHAREit versions are the Android 3.0.18_ww and Windows 2.5.1.1 packages, Core Security said.

On Windows, the vulnerable version of SHAREit had a hard-coded password that would allow anyone within range to connect to the application. The password was "12345678," and it couldn't be changed.

Incorporating a static password that can't be changed is considered a poor security practice.

Core Security found three other issues with the Windows version of SHAREit. A second software vulnerability could allow an attacker to view the names of files accessible to the SHAREit user, according to Lenovo's advisory.

Both the Windows and Android versions of SHAREit did not use encryption when transferring files. Files were transferred over HTTP, which means files are also vulnerable to a man-in-the-middle attack.

On Android devices, SHAREit didn't even bother to have a weak password for gaining access to its Wi-Fi hotspot: any device within range could join it, Core said.

Lenovo has made several changes to SHAREit. The updated version for Windows is 3.2.0 and 3.5.38_ww for Android. Windows users should see a prompt to update the next time the application is opened.

Both of the updated applications now have what Lenovo terms as a "secure mode." That mode asks SHAREit users to create a unique password before sharing files, preventing unauthorized devices from connecting. Secure mode will also encrypt file transfers using AES 256-bit encryption.

But users have to choose that mode, and Lenovo retains an "easy" mode. It was unclear if the easy mode retains the hard-coded password.

Join the CSO newsletter!

Error: Please check your email address.

More about LANLenovo

Show Comments

Featured Whitepapers

Editor's Recommendations

Solution Centres

Stories by Jeremy Kirk

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