New TikTok security flaw: millions of users affected

The flaw found impacts the cellular utility utilized by greater than 1 billion users in additional than 150 international locations. Specifically, the weak operate is the Find Friends of TikTookay, by way of which a cybercriminal might entry a consumer’s profile info, together with distinctive cellphone quantity, title, profile image, avatar and IDs. With it, he might have an entire database after which promote it or use it for different malicious functions.

Millions of doubtlessly affected users

The utility means that you can synchronize your cellular contacts to seek out different contacts that use the app. This permits profiles to be linked to cellphone numbers, and the vulnerability solely impacts users who’ve determined to affiliate their cellphone quantity with their account, which isn’t obligatory. Those who’ve logged in with their cellphone quantity are additionally affected.


To exploit the vulnerability, the researchers created an inventory of units with their corresponding IDs. Then an inventory of session tokens legitimate for 60 days is created. These tokens are generated through the SMS login course of, and indicate that each can be utilized to login for weeks.

From there, the attacker bypasses the TikTookay HTTP message signing utilizing your individual signature service working within the background. Later, it joins these parts to change the HTTP requests, reassign them, and use numerous session tokens and gadget IDs to bypass the safety mechanism of the social community, making a database of users who’ve linked their cellphone.

TikTookay has already fastened the bug: replace the app

The researchers’ suggestions embrace not sharing private knowledge within the profiles of this social community, in addition to updating the app to verify we have now the newest model put in.

As quickly as they found the flaw, Check Point shared their discovery with ByteDacen, answerable for TikTookay, and gave them a collection of suggestions to resolve the security flaw in order that users might proceed utilizing it with all of the ensures. Thus, the bug is fastened within the newest model of the applying, so we suggest that you simply replace it. Another very helpful tip is to make your TikTookay account non-public.