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Signal leaked random contacts to me! (feddit.de)

submitted 1 year ago* (last edited 1 year ago) by ErKaf@feddit.de to c/privacy@lemmy.ml

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When I press on some message to forward it, it shows me Random usernames of contacts I don't know. And it even shows some Mobile Numbers I don't know. For example, one number starts with +964 that's Iraq. I'm from Europe tho. These contacts and numbers are from all over the place.

Edit: This only happens on Signal Desktop. If I try to forward a message on Android it only shows my Contacts. And none of these unkown ones.

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[-] elias_griffin@lemmy.world 1 points 1 year ago* (last edited 1 year ago)

This is super helpful, I may post this to infosec.exchange. Flathub makes this so much more difficult to find the reason for what looks like a real breach. I don't use Flathub for security reasons so I don't know if you can even isolate the PID? Anyone know?

I don't want you to have to spend a lot of time or troubleshoot over the web but if you see anything that stands out as "wow shouldn't be there/running" when you run these commands come back to us:

ps the PID of Signal or secondarily, Flathub
lsof -p PID
strace
- sudo strace -f -t -e trace=file -p PID
sysctl kernel.randomize_va_space
- pkill/killall Flathub/Signal and restart FH/Signal and see if it still presents the vulnerability

this post was submitted on 26 Nov 2023

302 points (95.2% liked)

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