Menu
WhatsApp fixes dangerous flaw in Web app

WhatsApp fixes dangerous flaw in Web app

Malware could be delivered by changing a vCard's file extension

WhatsApp, the widely used messaging program, has fixed a dangerous flaw in its Web app that could be used to trick people into installing malware, according to Check Point.

The flaw could affect as many as 200 million people who use WhatsApp's web interface, wrote Oded Vanunu, Check Point's group manager for security research and penetration.

"All an attacker needed to do to exploit the vulnerability was to send a user a seemingly innocent vCard containing malicious code," he wrote.

The flaw was found by a Check Point researcher, Kasif Dekel. He found that the Web version of WhatsApp failed to properly filter electronic business cards in the vCard format.

Dekel found it was possible to change the file extension for a vCard to .bat, or a batch executable script. WhatsApp thinks a user is just receiving a vCard, but it's actually executable code.

"This means once the victim clicks the downloaded file (which he assumes is a contact card), the code inside the batch file runs on his computer," Dekel wrote.

An attacker just needs the victim's phone number to send the malicious code and for the recipient to accept it.

Check Point disclosed the flaw to WhatsApp on Aug. 21, and WhatApp released an update for Web clients on Aug. 27. The up-to-date version is v0.1.4481.

Check Point waited until Tuesday to publicly disclose the vulnerability.


Follow Us

Join the New Zealand Reseller News newsletter!

Error: Please check your email address.

Featured

Slideshows

Kiwi channel comes together for another round of After Hours

Kiwi channel comes together for another round of After Hours

The channel came together for another round of After Hours, with a bumper crowd of distributors, vendors and partners descending on The Jefferson in Auckland. Photos by Maria Stefina.​

Kiwi channel comes together for another round of After Hours
Consegna comes to town with AWS cloud offerings launch in Auckland

Consegna comes to town with AWS cloud offerings launch in Auckland

Emerging start-up Consegna has officially launched its cloud offerings in the New Zealand market, through a kick-off event held at Seafarers Building in Auckland.​ Founded in June 2016, the Auckland-based business is backed by AWS and supported by a global team of cloud specialists, leveraging global managed services partnerships with Rackspace locally.

Consegna comes to town with AWS cloud offerings launch in Auckland
Veritas honours top performing trans-Tasman partners

Veritas honours top performing trans-Tasman partners

Veritas honoured its top performing partners across the channel in Australia and New Zealand, recognising innovation and excellence on both sides of the Tasman. Revealed under the Vivid lights in Sydney, Intalock claimed the coveted Partner of the Year 2017 (Pacific) award, with Data#3 acknowledged for 12 months of strong growth across the market. Meanwhile, Datacom took home the New Zealand honours, with Global Storage and Insentra winning service provider and consulting awards respectively. Dicker Data was recognised as the standout distributor of the year, while Hitachi Data Systems claimed the alliance partner award. Photos by Bob Seary.

Veritas honours top performing trans-Tasman partners
Show Comments