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A week ago, I reported a privacy vulnerability to Meta which may allow attackers to discover any WhatsApp users' devices details, including online status and operating system. This flaw enables adversaries to accurately target a vulnerable iOS (iPhone) device.

132,308 Aufrufe • vor 1 Jahr •via X (Twitter)

51 Kommentare

Profilbild von Cthulhu ( ;,;)
Cthulhu ( ;,;)vor 1 Jahr

@Meta @WhatsApp Nice work! Thank you!

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@Meta @WhatsApp power to the people

Profilbild von mRr3b00t
mRr3b00tvor 1 Jahr

@Meta @WhatsApp 🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@Meta @WhatsApp Thanks man, I really appreciate your support

Profilbild von Jonathan Bar Or (JBO) 🇮🇱🇺🇸🇺🇦
Jonathan Bar Or (JBO) 🇮🇱🇺🇸🇺🇦vor 1 Jahr

@Meta @WhatsApp Have Meta acknowledged?

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@Meta @WhatsApp "A member of Meta’s security team has seen your report and performed an initial evaluation. We will get back to you once we have more information to share."

Profilbild von V A S I
V A S Ivor 1 Jahr

@yo_yo_yo_jbo @Meta @WhatsApp A member of Meta’s security team has seen your report and performed an initial evaluation. We will get back to you once we have more information to share. Next what response you got ?

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@yo_yo_yo_jbo @Meta @WhatsApp It seems like @Meta @WhatsApp is taking this seriously. #Soon 👀

Profilbild von V A S I
V A S Ivor 1 Jahr

@yo_yo_yo_jbo @Meta @WhatsApp Nice in my case I also got response like that after one day it was closed as N/A

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@yo_yo_yo_jbo @Meta @WhatsApp I had such too 🤷

Profilbild von @smagenil
@smagenilvor 1 Jahr

@Meta @WhatsApp nice findings!

Profilbild von McG
McGvor 1 Jahr

@Meta @WhatsApp Great work

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@Meta @WhatsApp Thanks

Profilbild von Yair Lifshitz
Yair Lifshitzvor 1 Jahr

@Meta @WhatsApp Are you part of the Whastapp security team? If not, where's the acknowledgement.

Profilbild von Tomer W
Tomer Wvor 1 Jahr

@Meta @WhatsApp R e s p e c t

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@Meta @WhatsApp T h a n k s

Profilbild von Saifuddin Amri
Saifuddin Amrivor 1 Jahr

@Meta @WhatsApp Thanks for the awesome work man. You save the world !

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@Meta @WhatsApp Thanks. Just trying to do my part.

Profilbild von Igal Gofman
Igal Gofmanvor 1 Jahr

@Meta @WhatsApp Nice finding!

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@Meta @WhatsApp Thanks

Profilbild von Gospel
Gospelvor 1 Jahr

@Meta @WhatsApp Great work !!!

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@Meta @WhatsApp Thanks!

Profilbild von DIBSTER :)
DIBSTER :)vor 1 Jahr

@Meta @WhatsApp 🔥Big dubs.

Profilbild von raiden
raidenvor 1 Jahr

@Meta @WhatsApp Impressive

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@Meta @WhatsApp Thanks

Profilbild von Steve Borosh
Steve Boroshvor 1 Jahr

@Meta @WhatsApp Nice work, friend! 💪

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@Meta @WhatsApp Thanks mate :)

Profilbild von Shaked Klein Orbach 🇮🇱
Shaked Klein Orbach 🇮🇱vor 1 Jahr

@mbrg0 @Meta @WhatsApp יש דרך לחסום את זה?

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@mbrg0 @Meta @WhatsApp לא שאני מכיר. לחסום את המשתמש שסורק אותך עובד, אבל איך תדע מראש מי יסרוק אותך

Profilbild von Romeo Whisky Sierra
Romeo Whisky Sierravor 1 Jahr

How can normal user have access whatsapp web interface (eg: device management) console?

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

This screenshot/capture is of a tool I had created, not of WhatsApp web interface

Profilbild von Romesh
Romeshvor 1 Jahr

@Meta @WhatsApp Any specific reason to call privacy vulnerability and not security vulnerability? Or both same?

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@Meta @WhatsApp Good Q. There is an overlap.

Profilbild von REni
REnivor 1 Jahr

@cyb3rops @Meta @WhatsApp Is the online status visible regarding the users privacy settings?

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@cyb3rops @Meta @WhatsApp As far as I can tell, there is no way for users to protect themselves with relevant privacy settings.

Profilbild von REni
REnivor 1 Jahr

@cyb3rops @Meta @WhatsApp Hmm interesting, would have thought that Settings > Privacy > Last seen & online > set to nobody + same as last seen, made a difference at least..

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@cyb3rops @Meta @WhatsApp It does, but not for this issue. It's not using the user's online status

Profilbild von Voidwalker
Voidwalkervor 1 Jahr

@Meta @WhatsApp So.. have WhatsApp found any conclusive evidence that anybody was fingerprinted/attacked by this or just the vulns?

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@Meta @WhatsApp We will probably never know for certain

Profilbild von p1tsi
p1tsivor 1 Jahr

@Meta @WhatsApp Very curious to have further details, hope you will write something about it soon. Meanwhile, are you by chance using a rooted/jb device or are you directly interact with WhatsApp’s servers?

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@Meta @WhatsApp I plan to write a detailed technical blog post about it, once @WhatsApp fixes it. To test these issues, I built (vibe coded 😅) my own tool, based on Baileys

Profilbild von Michael Bargury
Michael Barguryvor 1 Jahr

@Meta @WhatsApp that's a really cool find!

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@Meta @WhatsApp Thanks mate. Coming from you it's a real compliment

Profilbild von Gabriel Gegenhuber
Gabriel Gegenhubervor 1 Jahr

@Meta @WhatsApp hi Tal! I think this mostly overlaps with the findings we show in this paper: we reported the issue already back in 2024. also, the OS-fingerprinting (based on key-ids) was mentioned in another publication:

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@Meta @WhatsApp Great work! I saw your 2024 paper a few weeks ago and decided to implement it. In my report to @WhatsApp I give credit to you (cannot share it publicly yet). I think I had added some new elements with the fingerprinting, that I cannot share yet

Profilbild von Gabriel Gegenhuber
Gabriel Gegenhubervor 1 Jahr

@Meta @WhatsApp so cool, i'm curious about the fingerprinting you found. good luck with the ticket! :) ...i know from experience that it's very hard to get some actual feedback from Meta 😅

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@Meta @WhatsApp been there 😅

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@Meta @WhatsApp got the scars... :)

Profilbild von æ 🧙🏻‍♂️
æ 🧙🏻‍♂️vor 1 Jahr

@Meta @WhatsApp Did you get paid a good bounty?

Profilbild von Mike Belshe
Mike Belshevor 1 Jahr

@Meta @WhatsApp Thank you!!

Profilbild von Tal Be'ery
Tal Be'eryvor 1 Jahr

@Meta @WhatsApp Thanks you for your support :)

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