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[Bug 1390988] [NEW] Username spoofing in chat

 

*** This bug is a security vulnerability ***

Private security bug reported:

">" symbol at the end of a username gets stripped off while being
displayed in public/private chat. So this will allow impersonation of
users on chat. Check the attached screenshot. By connecting to the hub
with the username "PtokaX>" (NMDC), all my public/private chat messages
will appear to dcplusplus users as if they are from "PtokaX" itself.

Version: 0.843
Hub software used for testing: PtokaX 0.5.0.2
OS: Windows XP SP3

** Affects: dcplusplus
     Importance: Undecided
         Status: New

** Attachment added: "Screenshot of how crafted messages are shown"
   https://bugs.launchpad.net/bugs/1390988/+attachment/4256848/+files/Screen%20Shot%202014-11-10%20at%202.53.03%20am.png

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https://bugs.launchpad.net/bugs/1390988

Title:
  Username spoofing in chat

Status in DC++:
  New

Bug description:
  ">" symbol at the end of a username gets stripped off while being
  displayed in public/private chat. So this will allow impersonation of
  users on chat. Check the attached screenshot. By connecting to the hub
  with the username "PtokaX>" (NMDC), all my public/private chat
  messages will appear to dcplusplus users as if they are from "PtokaX"
  itself.

  Version: 0.843
  Hub software used for testing: PtokaX 0.5.0.2
  OS: Windows XP SP3

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