Beware: Pegasus-like spyware is targeting WhatsApp users with MP4 files

If someone has sent you an MP4 file on WhatsApp, refrain from downloading it as hackers may use a critical vulnerability in the instant messaging application to execute snooping attack on both Android and iOS devices.

The specially crafted MP4 file triggers the remote code execution (RCE) and denial of service (DoS) cyber attack.

"The vulnerability is classified as 'Critical' severity that affected an unknown code block of the component MP4 File Handler in WhatsApp," reported gbhackers.com on Saturday.

Facebook has issued an advisory, saying "A stack-based buffer overflow could be triggered in WhatsApp by sending a specially crafted MP4 file to a WhatsApp user."

"The issue was present in parsing the elementary stream metadata of an MP4 file and could result in a DoS or RCE."

Over a billion phones spread across five continents have reportedly been injected with the surveillance software; the targets included 1400 diplomats, scores of government officials, dissidents, journalists and human right activists; 120-odd Indians also have their phones compromised.

It is important to take note of this news as recently Pegasus spyware produced by Israeli cyber intelligence firm NSO Group was used to hack WhatsApp to snoop on its users has kicked up a global storm. The software had reportedly exploited WhatsApp's video calling system to snoop on 1,400 selected users globally and in India, including human rights activists and journalists.

The issue snowballed into a political one and the Indian government denied either purchasing or planning to purchase the infamous software in question.

"We agree with the government of India's strong statement about the need to safeguard the privacy of all Indian citizens. That is why we've taken this strong action to hold cyber attackers accountable and why WhatsApp is so committed to the protection of all user messages through the product we provide," a WhatsApp spokesperson had said in a statement.

The new vulnerability is found in Android versions prior to 2.19.274; iOS versions prior to 2.19.100; Enterprise Client versions prior to 2.25.3; Business for Android versions prior to 2.19.104; Business for iOS versions prior to 2.19.100; and Windows Phone versions before and including 2.18.368.

Hackers can use the WhatsApp vulnerability to deploy the malware on the user's device to steal sensitive files and also used to surveillance purpose.

"The RCE vulnerability allows hackers to perform the attack remotely without any sort of authentication," claimed the report.

The critical WhatsApp vulnerability can be tracked as CVE-2019-11931.

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