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RealVNC4/WinVNC4 vulnerabilities

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RealVNC4/WinVNC4 vulnerabilities

This is a discussion on "RealVNC4/WinVNC4 vulnerabilities" within the Security discussions part of the Computer Security: Discussions section; http://www.google.com/search?hl=en&q=fr ... translator ;)...

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#31 (permalink)

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28-09-05

class101 is offline

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http://www.google.com/search?hl=en&q=fr ... translator

;)

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#32 (permalink)

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03-10-05

thetrooper thetrooper is offline

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i've tried it and it's really cool, thanks class!

now it can check for a NULL section, but it doesn't check for BLANK password (or password in a dictionary)

will you code those function in the future?

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#33 (permalink)

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03-10-05

class101 is offline

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Quote:

Originally Posted by thetrooper

i've tried it and it's really cool, thanks class!

now it can check for a NULL section, but it doesn't check for BLANK password (or password in a dictionary)

will you code those function in the future?

NULL Session = blank password, It's a term used a lot to describe network share connections without password, I mean the same for VNC, if do you find a Radmin or winvnc null session, this mean that you can connect the server with the correct client without any password.

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#34 (permalink)

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04-10-05

thetrooper thetrooper is offline

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Quote:

Originally Posted by class101

NULL Session = blank password...

i think it isn't correct
i've installed a vnc server on a pc
then set the password to blank
i confirmed a "session with authentication but no password" (vnc version 4.1.1. free edition)
it's the default choice, if i want to allow NULL session i must select it from the installation menu

this is the result of the scan:

=============================================[rev-1.0.7RC1]==
==============DFind - #1 Tiny Security Scanner===============
============multi-threaded for Linux and Windows=============
================================================== ===========
VNC4 systems vulnerability scanner
================================================== ===========

[+] status..: 100% thread(s):1 192.168.0.2:5900 vnc4 passwd (free ed. win32)
[+] status..: 100% thread(s):0 [+] status..: 100% thread(s):0
[+] results.: 0 / 1 IP(s) (open:1 vnc:1 passwd:1)

so i think that an user can set a blank password but keep safe from an attack

however it's a good scanner

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#35 (permalink)

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26-10-05

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VNC is a rift enough not very exploited. On a lot of NULL session, one falls on MAC.

To when the buffer overflow!

(I'm french and if my translation is bad, never go to the website http://www.freetranslation.com/ !)

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#36 (permalink)

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18-01-06

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good work

thanks

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