Ticket #5866 (closed defect: fixed)

Opened 8 years ago

Last modified 7 years ago

RDP crashes Virtualbox guest [DoS]

Reported by: nullslash Owned by:
Priority: major Component: RDP
Version: VirtualBox 3.1.2 Keywords: Linux,DoS, RDP,Crash
Cc: Guest type: Linux
Host type: Linux


Hello, I'm trying to enable external authentications but every time I try to connect to the guest screen, I find myself disconnected and the Virtal-guest crashes. If I enabled this in the internet, anyone can disable my access to my virtual-guests. I found someone has the same bug in the earlier release 2.x, but it seems everyone has ignored him.

Here is my log.

00:00:40.190 VRDP: New connection: 00:00:40.201 VRDP: Flags 0x00000003 00:00:40.201 VRDP: Channel: [cliprdr] [1004]. Accepted. 00:00:40.202 VRDP: Client seems to be rdesktop. 00:00:40.202 VRDP: Logon: T400 ( build 2600. User: [root] Domain: [] Screen: 0 00:00:40.205 VRDPAUTH: User: [root]. Domain: []. Authentication type: [External] 00:00:40.205 VRDPAUTH: ConsoleVRDPServer::Authenticate: loading external authentication library 'VRDPAuth' 00:00:40.205 VRDPAUTH: Using entry point 'VRDPAuth'. 00:00:43.033 VRDPAUTH: external authentication module returned 'access denied' 00:00:43.033 VRDPAUTH: Access denied. 00:00:43.033 VRDP: Connection closed: 00:00:43.033 VRDP: Logoff: T400 ( build 2600. User: [root] Domain: [] Reason 0x0001.


srv1-2009-12-29-06-20-11.log Download (39.5 KB) - added by nullslash 8 years ago.

Change History

Changed 8 years ago by nullslash


comment:1 Changed 8 years ago by sunlover

We need a core dump of the crash. Here is how to get one:

comment:2 Changed 8 years ago by nullslash

[root@T400 dump]# ls
[root@T400 dump]#  /usr/lib/virtualbox/VirtualBox -startvm srv2 &
[1] 8705
[root@T400 dump]# Qt WARNING: QGtkStyle cannot be used together with the GTK_Qt engine.
Qt WARNING: Qt: Session management error: None of the authentication protocols specified are supported

[1]+  Segmentation fault      (core dumped) /usr/lib/virtualbox/VirtualBox -startvm srv2
[root@T400 dump]# ls
[root@T400 dump]# find / -name core.8705

I'm trying get make the core dump works, but I think it doesn't work

Here is my Vbox.log from the beginning

comment:3 Changed 8 years ago by frank

Perhaps the core was dumped to a different directory or with a different name (perhaps just core not core.8705)?

comment:4 Changed 7 years ago by frank

Still relevant with VBox 4.0.4?

comment:5 Changed 7 years ago by frank

  • Status changed from new to closed
  • Resolution set to fixed

No response, closing.

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