in https://twitter.com/nnwakelam/status/1363761612423786496, its tweeted:

fucking yikes.. ran every bitcoin exchange for a really common shell and found....

Uname: Linux cloudimage 4.4.0-166-generic #195-Ubuntu SMP Tue Oct 1 09:36:25 UTC 2019 i686
User: 33 [ www-data ] Group: 33 [ www.data ]
7.0.33-0ubuntu0.16.04.16 Safe Mode: OFF

Some of that might be anonymized...?

what is the vulnerability here? What "really common shell" might he/she be talking about?

1 Answer 1


They're claiming that they found a webshell installed on a bitcoin exchange site. So the vulnerability is that someone has already compromised the exchange's server and left the webshell sitting ready to take commands from anybody... and that as a "really common shell", lots of people would know how to find it and use it.

Not enough information to tell which common shell it is, however.

  • Whats an example common shell they could be talking about? how would you "scan" for this? Commented Feb 23, 2021 at 1:17
  • There's a collection of webshells at github, and I would assume the poster scanned by testing commonly used URL paths to see if anything showed up.
    – gowenfawr
    Commented Feb 23, 2021 at 1:50

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