Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: libvncserver (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1070614
Title:
x11vnc Ubuntu 12.10 - buffer overflow and not working
Status in “libvncserver” package in Ubuntu:
Confirmed
Bug description:
Hi,
I just upgraded from Ubuntu 12.04 64bit to Ubuntu 12.10 64bit and now
x11vnc is not working.
It keeps crashing with a buffer overflow as seen below.
it does NOT crash every time. Seems to be random.
When it does not crash x11vnc is NOT getting any connections now and
it is NOT a firewall. I turned it off via ufw and still no connections
are made it seems. Was fine before the upgrade to Ubuntu 12.10.
I'm starting x11vnc with the following upstart script:
# x11vnc
#
# This x11vnc server provides secure remote access (via SSH2) to the desktop.
description "x11vnc server"
start on runlevel 2
stop on runlevel [!2345]
respawn
respawn limit 10 5
umask 022
exec x11vnc -env FD_XDM=1 -auth guess -display :0 -rfbport 5901
-rfbauth /home/rob/.vnc/passwd -forever -localhost -solid black
-ncache 10 -ncache_cr -ultrafilexfer -xkb -o
/media/RAID/Will/x11vnc/x11vnc.log -shared -noxfixes -cursor arrow
-arrow 3 -noxrecord
This has been working fine since at least Ubuntu 11.10. Again, was
working fine no problem until I upgraded to Ubuntu 12.10 the other
day.
rob@RobsUbuntuServer:~/Desktop$ lsb_release -rd
Description: Ubuntu 12.10
Release: 12.10
rob@RobsUbuntuServer:~/Desktop$ apt-cache policy x11vnc
x11vnc:
Installed: 0.9.13-1ubuntu1
Candidate: 0.9.13-1ubuntu1
Version table:
*** 0.9.13-1ubuntu1 0
500 http://archive.linux.duke.edu/ubuntu/ quantal/universe amd64
Packages
100 /var/lib/dpkg/status
I was expecting my upstart script to still work on the upgrade to
Ubuntu 12.10 and I expect x11vnc to not crash on startup witha buffer
overflow and I'd expect it to continue to work and allow connections.
Please see the following log show the buffer overflow crash:
23/10/2012 19:07:00 passing arg to libvncserver: -rfbport
23/10/2012 19:07:00 passing arg to libvncserver: 5901
23/10/2012 19:07:00 passing arg to libvncserver: -rfbauth
23/10/2012 19:07:00 passing arg to libvncserver: /home/rob/.vnc/passwd
23/10/2012 19:07:00 passing arg to libvncserver: -rfbversion
23/10/2012 19:07:00 passing arg to libvncserver: 3.6
23/10/2012 19:07:00 passing arg to libvncserver: -permitfiletransfer
23/10/2012 19:07:00 x11vnc version: 0.9.13 lastmod: 2011-08-10 pid: 5658
23/10/2012 19:07:00 Using X display :0
23/10/2012 19:07:00 rootwin: 0x27d reswin: 0x3600001 dpy: 0x206b7b0
23/10/2012 19:07:00
23/10/2012 19:07:00 ------------------ USEFUL INFORMATION ------------------
23/10/2012 19:07:01 X DAMAGE available on display, using it for polling hints.
23/10/2012 19:07:01 To disable this behavior use: '-noxdamage'
23/10/2012 19:07:01
23/10/2012 19:07:01 Most compositing window managers like 'compiz' or
'beryl'
23/10/2012 19:07:01 cause X DAMAGE to fail, and so you may not see any
screen
23/10/2012 19:07:01 updates via VNC. Either disable 'compiz' (recommended)
or
23/10/2012 19:07:01 supply the x11vnc '-noxdamage' command line option.
23/10/2012 19:07:01
23/10/2012 19:07:01 Wireframing: -wireframe mode is in effect for window
moves.
23/10/2012 19:07:01 If this yields undesired behavior (poor response,
painting
23/10/2012 19:07:01 errors, etc) it may be disabled:
23/10/2012 19:07:01 - use '-nowf' to disable wireframing completely.
23/10/2012 19:07:01 - use '-nowcr' to disable the Copy Rectangle after the
23/10/2012 19:07:01 moved window is released in the new position.
23/10/2012 19:07:01 Also see the -help entry for tuning parameters.
23/10/2012 19:07:01 You can press 3 Alt_L's (Left "Alt" key) in a row to
23/10/2012 19:07:01 repaint the screen, also see the -fixscreen option for
23/10/2012 19:07:01 periodic repaints.
23/10/2012 19:07:01 GrabServer control via XTEST.
23/10/2012 19:07:01
23/10/2012 19:07:01 Scroll Detection: -scrollcopyrect mode is in effect to
23/10/2012 19:07:01 use RECORD extension to try to detect scrolling windows
23/10/2012 19:07:01 (induced by either user keystroke or mouse input).
23/10/2012 19:07:01 If this yields undesired behavior (poor response,
painting
23/10/2012 19:07:01 errors, etc) it may be disabled via: '-noscr'
23/10/2012 19:07:01 Also see the -help entry for tuning parameters.
23/10/2012 19:07:01 You can press 3 Alt_L's (Left "Alt" key) in a row to
23/10/2012 19:07:01 repaint the screen, also see the -fixscreen option for
23/10/2012 19:07:01 periodic repaints.
23/10/2012 19:07:01
23/10/2012 19:07:01 Client Side Caching: -ncache mode is in effect to provide
23/10/2012 19:07:01 client-side pixel data caching. This speeds up
23/10/2012 19:07:01 iconifying/deiconifying windows, moving and raising
23/10/2012 19:07:01 windows, and reposting menus. In the simple CopyRect
23/10/2012 19:07:01 encoding scheme used (no compression) a huge amount
23/10/2012 19:07:01 of extra memory (20-100MB) is used on both the server
and
23/10/2012 19:07:01 client sides. This mode works with any VNC viewer.
23/10/2012 19:07:01 However, in most you can actually see the cached pixel
23/10/2012 19:07:01 data by scrolling down, so you need to re-adjust its
size.
23/10/2012 19:07:01 See
http://www.karlrunge.com/x11vnc/faq.html#faq-client-caching.
23/10/2012 19:07:01 If this mode yields undesired behavior (poor response,
23/10/2012 19:07:01 painting errors, etc) it may be disabled via: '-ncache
0'
23/10/2012 19:07:01 You can press 3 Alt_L's (Left "Alt" key) in a row to
23/10/2012 19:07:01 repaint the screen, also see the -fixscreen option for
23/10/2012 19:07:01 periodic repaints.
23/10/2012 19:07:01 X FBPM extension not supported.
23/10/2012 19:07:01 X display is capable of DPMS.
23/10/2012 19:07:01 --------------------------------------------------------
23/10/2012 19:07:01
23/10/2012 19:07:01 Default visual ID: 0x21
23/10/2012 19:07:01 Read initial data from X display into framebuffer.
23/10/2012 19:07:01 initialize_screen: fb_depth/fb_bpp/fb_Bpl 24/32/5120
23/10/2012 19:07:01
23/10/2012 19:07:01 X display :0 is 32bpp depth=24 true color
23/10/2012 19:07:01
23/10/2012 19:07:01 Listening for VNC connections on TCP port 5901
23/10/2012 19:07:01 rfbListenOnTCP6Port: error in bind IPv6 socket: Address
family not supported by protocol
23/10/2012 19:07:01 listen6: socket: Address family not supported by protocol
23/10/2012 19:07:01 (Ignore the above error if this system is IPv4-only.)
23/10/2012 19:07:01 Not listening on IPv6 interface.
23/10/2012 19:07:01
23/10/2012 19:07:01 Xinerama is present and active (e.g. multi-head).
23/10/2012 19:07:01 Xinerama: number of sub-screens: 1
23/10/2012 19:07:01 Xinerama: no blackouts needed (only one sub-screen)
23/10/2012 19:07:01
23/10/2012 19:07:01 fb read rate: 172 MB/sec
23/10/2012 19:07:01 fast read: reset -wait ms to: 10
23/10/2012 19:07:01 fast read: reset -defer ms to: 10
23/10/2012 19:07:01 The X server says there are 10 mouse buttons.
23/10/2012 19:07:01 screen setup finished.
23/10/2012 19:07:01
The VNC desktop is: localhost:1
*** buffer overflow detected ***: x11vnc terminated
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(__fortify_fail+0x5c)[0x7f8132ffe82c]
/lib/x86_64-linux-gnu/libc.so.6(+0x109700)[0x7f8132ffd700]
/lib/x86_64-linux-gnu/libc.so.6(+0x10a7be)[0x7f8132ffe7be]
/usr/lib/x86_64-linux-gnu/libvncserver.so.0(rfbProcessNewConnection+0x104)[0x7f81352e2694]
/usr/lib/x86_64-linux-gnu/libvncserver.so.0(rfbCheckFds+0x3e8)[0x7f81352e2ba8]
/usr/lib/x86_64-linux-gnu/libvncserver.so.0(rfbProcessEvents+0x1d)[0x7f81352d9fcd]
x11vnc[0x4a3081]
x11vnc[0x465102]
x11vnc[0x410be3]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed)[0x7f8132f1576d]
x11vnc[0x41b4d5]
======= Memory map: ========
00400000-00544000 r-xp 00000000 fc:00 132531
/usr/bin/x11vnc
00743000-00744000 r--p 00143000 fc:00 132531
/usr/bin/x11vnc
00744000-0078a000 rw-p 00144000 fc:00 132531
/usr/bin/x11vnc
0078a000-009cc000 rw-p 00000000 00:00 0
02065000-02150000 rw-p 00000000 00:00 0
[heap]
7f812c046000-7f812fc47000 rw-p 00000000 00:00 0
7f812fda9000-7f812fdbe000 r-xp 00000000 fc:00 919352
/lib/x86_64-linux-gnu/libgcc_s.so.1
7f812fdbe000-7f812ffbd000 ---p 00015000 fc:00 919352
/lib/x86_64-linux-gnu/libgcc_s.so.1
7f812ffbd000-7f812ffbe000 r--p 00014000 fc:00 919352
/lib/x86_64-linux-gnu/libgcc_s.so.1
7f812ffbe000-7f812ffbf000 rw-p 00015000 fc:00 919352
/lib/x86_64-linux-gnu/libgcc_s.so.1
7f812ffe4000-7f812ffe6000 rw-p 00000000 00:00 0
7f812ffe6000-7f813000e000 rw-s 00000000 00:04 1507374
/SYSV00000000 (deleted)
7f813000e000-7f8130035000 rw-s 00000000 00:04 1474605
/SYSV00000000 (deleted)
7f8130035000-7f813005b000 rw-s 00000000 00:04 1441836
/SYSV00000000 (deleted)
7f813005b000-7f8130080000 rw-s 00000000 00:04 1409067
/SYSV00000000 (deleted)
7f8130080000-7f81300a4000 rw-s 00000000 00:04 1376298
/SYSV00000000 (deleted)
7f81300a4000-7f81300c7000 rw-s 00000000 00:04 1343529
/SYSV00000000 (deleted)
7f81300c7000-7f81300e9000 rw-s 00000000 00:04 1310760
/SYSV00000000 (deleted)
7f81300e9000-7f813010a000 rw-s 00000000 00:04 1277991
/SYSV00000000 (deleted)
7f813010a000-7f813012a000 rw-s 00000000 00:04 1245222
/SYSV00000000 (deleted)
7f813012a000-7f8130149000 rw-s 00000000 00:04 1212453
/SYSV00000000 (deleted)
7f8130149000-7f8130649000 rw-s 00000000 00:04 196614
/SYSV00000000 (deleted)
7f8130649000-7f8130655000 r-xp 00000000 fc:00 918823
/lib/x86_64-linux-gnu/libnss_files-2.15.so
7f8130655000-7f8130854000 ---p 0000c000 fc:00 918823
/lib/x86_64-linux-gnu/libnss_files-2.15.so
7f8130854000-7f8130855000 r--p 0000b000 fc:00 918823
/lib/x86_64-linux-gnu/libnss_files-2.15.so
7f8130855000-7f8130856000 rw-p 0000c000 fc:00 918823
/lib/x86_64-linux-gnu/libnss_files-2.15.so
7f8130856000-7f8130860000 r-xp 00000000 fc:00 918628
/lib/x86_64-linux-gnu/libnss_nis-2.15.so
7f8130860000-7f8130a60000 ---p 0000a000 fc:00 918628
/lib/x86_64-linux-gnu/libnss_nis-2.15.so
7f8130a60000-7f8130a61000 r--p 0000a000 fc:00 918628
/lib/x86_64-linux-gnu/libnss_nis-2.15.so
7f8130a61000-7f8130a62000 rw-p 0000b000 fc:00 918628
/lib/x86_64-linux-gnu/libnss_nis-2.15.so
7f8130a62000-7f8130a79000 r-xp 00000000 fc:00 919655
/lib/x86_64-linux-gnu/libnsl-2.15.so
7f8130a79000-7f8130c78000 ---p 00017000 fc:00 919655
/lib/x86_64-linux-gnu/libnsl-2.15.so
7f8130c78000-7f8130c79000 r--p 00016000 fc:00 919655
/lib/x86_64-linux-gnu/libnsl-2.15.so
7f8130c79000-7f8130c7a000 rw-p 00017000 fc:00 919655
/lib/x86_64-linux-gnu/libnsl-2.15.so
7f8130c7a000-7f8130c7c000 rw-p 00000000 00:00 0
7f8130c7c000-7f8130c84000 r-xp 00000000 fc:00 918836
/lib/x86_64-linux-gnu/libnss_compat-2.15.so
7f8130c84000-7f8130e83000 ---p 00008000 fc:00 918836
/lib/x86_64-linux-gnu/libnss_compat-2.15.so
7f8130e83000-7f8130e84000 r--p 00007000 fc:00 918836
/lib/x86_64-linux-gnu/libnss_compat-2.15.so
7f8130e84000-7f8130e85000 rw-p 00008000 fc:00 918836
/lib/x86_64-linux-gnu/libnss_compat-2.15.so
7f8130e85000-7f8130e8b000 rw-p 00000000 00:00 0
7f8130e8b000-7f8130e92000 r-xp 00000000 fc:00 918526
/lib/x86_64-linux-gnu/librt-2.15.so
7f8130e92000-7f8131091000 ---p 00007000 fc:00 918526
/lib/x86_64-linux-gnu/librt-2.15.so
7f8131091000-7f8131092000 r--p 00006000 fc:00 918526
/lib/x86_64-linux-gnu/librt-2.15.so
7f8131092000-7f8131093000 rw-p 00007000 fc:00 918526
/lib/x86_64-linux-gnu/librt-2.15.so
7f8131093000-7f8131098000 r-xp 00000000 fc:00 132234
/usr/lib/x86_64-linux-gnu/libXdmcp.so.6.0.0
7f8131098000-7f8131297000 ---p 00005000 fc:00 132234
/usr/lib/x86_64-linux-gnu/libXdmcp.so.6.0.0
7f8131297000-7f8131298000 r--p 00004000 fc:00 132234
/usr/lib/x86_64-linux-gnu/libXdmcp.so.6.0.0
7f8131298000-7f8131299000 rw-p 00005000 fc:00 132234
/usr/lib/x86_64-linux-gnu/libXdmcp.so.6.0.0
7f8131299000-7f813129b000 r-xp 00000000 fc:00 132229
/usr/lib/x86_64-linux-gnu/libXau.so.6.0.0
7f813129b000-7f813149b000 ---p 00002000 fc:00 132229
/usr/lib/x86_64-linux-gnu/libXau.so.6.0.0
7f813149b000-7f813149c000 r--p 00002000 fc:00 132229
/usr/lib/x86_64-linux-gnu/libXau.so.6.0.0
7f813149c000-7f813149d000 rw-p 00003000 fc:00 132229
/usr/lib/x86_64-linux-gnu/libXau.so.6.0.0
7f813149d000-7f81314af000 r-xp 00000000 fc:00 135474
/usr/lib/x86_64-linux-gnu/libp11-kit.so.0.0.0
7f81314af000-7f81316af000 ---p 00012000 fc:00 135474
/usr/lib/x86_64-linux-gnu/libp11-kit.so.0.0.0
7f81316af000-7f81316b0000 r--p 00012000 fc:00 135474
/usr/lib/x86_64-linux-gnu/libp11-kit.so.0.0.0
7f81316b0000-7f81316b1000 rw-p 00013000 fc:00 135474
/usr/lib/x86_64-linux-gnu/libp11-kit.so.0.0.0
7f81316b1000-7f81316c0000 r-xp 00000000 fc:00 134614
/usr/lib/x86_64-linux-gnu/libtasn1.so.3.1.16
7f81316c0000-7f81318c0000 ---p 0000f000 fc:00 134614
/usr/lib/x86_64-linux-gnu/libtasn1.so.3.1.16
7f81318c0000-7f81318c1000 r--p 0000f000 fc:00 134614
/usr/lib/x86_64-linux-gnu/libtasn1.so.3.1.16
7f81318c1000-7f81318c2000 rw-p 00010000 fc:00 134614
/usr/lib/x86_64-linux-gnu/libtasn1.so.3.1.16
7f81318c2000-7f81318c5000 r-xp 00000000 fc:00 921464
/lib/x86_64-linux-gnu/libgpg-error.so.0.8.0
7f81318c5000-7f8131ac4000 ---p 00003000 fc:00 921464
/lib/x86_64-linux-gnu/libgpg-error.so.0.8.0
7f8131ac4000-7f8131ac5000 r--p 00002000 fc:00 921464
/lib/x86_64-linux-gnu/libgpg-error.so.0.8.0
7f8131ac5000-7f8131ac6000 rw-p 00003000 fc:00 921464
/lib/x86_64-linux-gnu/libgpg-error.so.0.8.0
7f8131ac6000-7f8131b09000 r-xp 00000000 fc:00 922375
/lib/x86_64-linux-gnu/libdbus-1.so.3.7.2
7f8131b09000-7f8131d08000 ---p 00043000 fc:00 922375
/lib/x86_64-linux-gnu/libdbus-1.so.3.7.2
7f8131d08000-7f8131d09000 r--p 00042000 fc:00 922375
/lib/x86_64-linux-gnu/libdbus-1.so.3.7.2
7f8131d09000-7f8131d0a000 rw-p 00043000 fc:00 922375
/lib/x86_64-linux-gnu/libdbus-1.so.3.7.2
7f8131d0a000-7f8131d27000 r-xp 00000000 fc:00 131842
/usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0
7f8131d27000-7f8131f26000 ---p 0001d000 fc:00 131842
/usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0
7f8131f26000-7f8131f27000 r--p 0001c000 fc:00 131842
/usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0
7f8131f27000-7f8131f28000 rw-p 0001d000 fc:00 131842
/usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0
7f8131f28000-7f8131f31000 r-xp 00000000 fc:00 131602
/usr/lib/x86_64-linux-gnu/libXrender.so.1.3.0
7f8131f31000-7f8132130000 ---p 00009000 fc:00 131602
/usr/lib/x86_64-linux-gnu/libXrender.so.1.3.0
7f8132130000-7f8132131000 r--p 00008000 fc:00 131602
/usr/lib/x86_64-linux-gnu/libXrender.so.1.3.0
7f8132131000-7f8132132000 rw-p 00009000 fc:00 131602
/usr/lib/x86_64-linux-gnu/libXrender.so.1.3.0
7f8132132000-7f8132134000 r-xp 00000000 fc:00 917981
/lib/x86_64-linux-gnu/libdl-2.15.so
7f8132134000-7f8132334000 ---p 00002000 fc:00 917981
/lib/x86_64-linux-gnu/libdl-2.15.so
7f8132334000-7f8132335000 r--p 00002000 fc:00 917981
/lib/x86_64-linux-gnu/libdl-2.15.so
7f8132335000-7f8132336000 rw-p 00003000 fc:00 917981
/lib/x86_64-linux-gnu/libdl-2.15.so
7f8132336000-7f81323ea000 r-xp 00000000 fc:00 132735
/usr/lib/x86_64-linux-gnu/libgnutls.so.26.21.8
7f81323ea000-7f81325ea000 ---p 000b4000 fc:00 132735
/usr/lib/x86_64-linux-gnu/libgnutls.so.26.21.8
7f81325ea000-7f81325f0000 r--p 000b4000 fc:00 132735
/usr/lib/x86_64-linux-gnu/libgnutls.so.26.21.8
7f81325f0000-7f81325f1000 rw-p 000ba000 fc:00 132735
/usr/lib/x86_64-linux-gnu/libgnutls.so.26.21.8
7f81325f1000-7f81325f2000 rw-p 00000000 00:00 0
7f81325f2000-7f813266c000 r-xp 00000000 fc:00 920791
/lib/x86_64-linux-gnu/libgcrypt.so.11.7.0
7f813266c000-7f813286c000 ---p 0007a000 fc:00 920791
/lib/x86_64-linux-gnu/libgcrypt.so.11.7.0
7f813286c000-7f813286d000 r--p 0007a000 fc:00 920791
/lib/x86_64-linux-gnu/libgcrypt.so.11.7.0
7f813286d000-7f8132870000 rw-p 0007b000 fc:00 920791
/lib/x86_64-linux-gnu/libgcrypt.so.11.7.0
7f8132870000-7f8132888000 r-xp 00000000 fc:00 918622
/lib/x86_64-linux-gnu/libresolv-2.15.so
7f8132888000-7f8132a88000 ---p 00018000 fc:00 918622
/lib/x86_64-linux-gnu/libresolv-2.15.so
7f8132a88000-7f8132a89000 r--p 00018000 fc:00 918622
/lib/x86_64-linux-gnu/libresolv-2.15.so
7f8132a89000-7f8132a8a000 rw-p 00019000 fc:00 918622
/lib/x86_64-linux-gnu/libresolv-2.15.so
7f8132a8a000-7f8132a8c000 rw-p 00000000 00:00 0
7f8132a8c000-7f8132acb000 r-xp 00000000 fc:00 132847
/usr/lib/x86_64-linux-gnu/libjpeg.so.8.0.2
7f8132acb000-7f8132ccb000 ---p 0003f000 fc:00 132847
/usr/lib/x86_64-linux-gnu/libjpeg.so.8.0.2
7f8132ccb000-7f8132ccc000 r--p 0003f000 fc:00 132847
/usr/lib/x86_64-linux-gnu/libjpeg.so.8.0.2
7f8132ccc000-7f8132ccd000 rw-p 00040000 fc:00 132847
/usr/lib/x86_64-linux-gnu/libjpeg.so.8.0.2
7f8132ccd000-7f8132cdd000 rw-p 00000000 00:00 0
7f8132cdd000-7f8132cf3000 r-xp 00000000 fc:00 939148
/lib/x86_64-linux-gnu/libz.so.1.2.7
7f8132cf3000-7f8132ef2000 ---p 00016000 fc:00 939148
/lib/x86_64-linux-gnu/libz.so.1.2.7
7f8132ef2000-7f8132ef3000 r--p 00015000 fc:00 939148
/lib/x86_64-linux-gnu/libz.so.1.2.7
7f8132ef3000-7f8132ef4000 rw-p 00016000 fc:00 939148
/lib/x86_64-linux-gnu/libz.so.1.2.7
7f8132ef4000-7f81330a9000 r-xp 00000000 fc:00 918008
/lib/x86_64-linux-gnu/libc-2.15.so
7f81330a9000-7f81332a8000 ---p 001b5000 fc:00 918008
/lib/x86_64-linux-gnu/libc-2.15.so
7f81332a8000-7f81332ac000 r--p 001b4000 fc:00 918008
/lib/x86_64-linux-gnu/libc-2.15.so
7f81332ac000-7f81332ae000 rw-p 001b8000 fc:00 918008
/lib/x86_64-linux-gnu/libc-2.15.so
7f81332ae000-7f81332b3000 rw-p 00000000 00:00 0
7f81332b3000-7f81332c2000 r-xp 00000000 fc:00 133394
/usr/lib/x86_64-linux-gnu/libavahi-client.so.3.2.9
7f81332c2000-7f81334c2000 ---p 0000f000 fc:00 133394
/usr/lib/x86_64-linux-gnu/libavahi-client.so.3.2.9
7f81334c2000-7f81334c3000 r--p 0000f000 fc:00 133394
/usr/lib/x86_64-linux-gnu/libavahi-client.so.3.2.9
7f81334c3000-7f81334c4000 rw-p 00010000 fc:00 133394
/usr/lib/x86_64-linux-gnu/libavahi-client.so.3.2.9
7f81334c4000-7f81334cf000 r-xp 00000000 fc:00 133395
/usr/lib/x86_64-linux-gnu/libavahi-common.so.3.5.3
7f81334cf000-7f81336ce000 ---p 0000b000 fc:00 133395
/usr/lib/x86_64-linux-gnu/libavahi-common.so.3.5.3
7f81336ce000-7f81336cf000 r--p 0000a000 fc:00 133395
/usr/lib/x86_64-linux-gnu/libavahi-common.so.3.5.3
7f81336cf000-7f81336d0000 rw-p 0000b000 fc:00 133395
/usr/lib/x86_64-linux-gnu/libavahi-common.so.3.5.3
7f81336d0000-7f8133804000 r-xp 00000000 fc:00 137798
/usr/lib/x86_64-linux-gnu/libX11.so.6.3.0
7f8133804000-7f8133a04000 ---p 00134000 fc:00 137798
/usr/lib/x86_64-linux-gnu/libX11.so.6.3.0
7f8133a04000-7f8133a05000 r--p 00134000 fc:00 137798
/usr/lib/x86_64-linux-gnu/libX11.so.6.3.0
7f8133a05000-7f8133a0a000 rw-p 00135000 fc:00 137798
/usr/lib/x86_64-linux-gnu/libX11.so.6.3.0
7f8133a0a000-7f8133a0c000 r-xp 00000000 fc:00 139746
/usr/lib/x86_64-linux-gnu/libXdamage.so.1.1.0
7f8133a0c000-7f8133c0b000 ---p 00002000 fc:00 139746
/usr/lib/x86_64-linux-gnu/libXdamage.so.1.1.0
7f8133c0b000-7f8133c0c000 r--p 00001000 fc:00 139746
/usr/lib/x86_64-linux-gnu/libXdamage.so.1.1.0
7f8133c0c000-7f8133c0d000 rw-p 00002000 fc:00 139746
/usr/lib/x86_64-linux-gnu/libXdamage.so.1.1.0
7f8133c0d000-7f8133c12000 r-xp 00000000 fc:00 134492
/usr/lib/x86_64-linux-gnu/libXfixes.so.3.1.0
7f8133c12000-7f8133e11000 ---p 00005000 fc:00 134492
/usr/lib/x86_64-linux-gnu/libXfixes.so.3.1.0
7f8133e11000-7f8133e12000 r--p 00004000 fc:00 134492
/usr/lib/x86_64-linux-gnu/libXfixes.so.3.1.0
7f8133e12000-7f8133e13000 rw-p 00005000 fc:00 134492
/usr/lib/x86_64-linux-gnu/libXfixes.so.3.1.0
7f8133e13000-7f8133e1c000 r-xp 00000000 fc:00 141707
/usr/lib/x86_64-linux-gnu/libXrandr.so.2.2.0
7f8133e1c000-7f813401b000 ---p 00009000 fc:00 141707
/usr/lib/x86_64-linux-gnu/libXrandr.so.2.2.0
7f813401b000-7f813401c000 r--p 00008000 fc:00 141707
/usr/lib/x86_64-linux-gnu/libXrandr.so.2.2.0
7f813401c000-7f813401d000 rw-p 00009000 fc:00 141707
/usr/lib/x86_64-linux-gnu/libXrandr.so.2.2.0
7f813401d000-7f813401f000 r-xp 00000000 fc:00 136834
/usr/lib/x86_64-linux-gnu/libXinerama.so.1.0.0
7f813401f000-7f813421e000 ---p 00002000 fc:00 136834
/usr/lib/x86_64-linux-gnu/libXinerama.so.1.0.0
7f813421e000-7f813421f000 r--p 00001000 fc:00 136834
/usr/lib/x86_64-linux-gnu/libXinerama.so.1.0.0
7f813421f000-7f8134220000 rw-p 00002000 fc:00 136834
/usr/lib/x86_64-linux-gnu/libXinerama.so.1.0.0
7f8134220000-7f8134230000 r-xp 00000000 fc:00 131237
/usr/lib/x86_64-linux-gnu/libXext.so.6.4.0
7f8134230000-7f8134430000 ---p 00010000 fc:00 131237
/usr/lib/x86_64-linux-gnu/libXext.so.6.4.0
7f8134430000-7f8134431000 r--p 00010000 fc:00 131237
/usr/lib/x86_64-linux-gnu/libXext.so.6.4.0
7f8134431000-7f8134432000 rw-p 00011000 fc:00 131237
/usr/lib/x86_64-linux-gnu/libXext.so.6.4.0
7f8134432000-7f8134437000 r-xp 00000000 fc:00 137148
/usr/lib/x86_64-linux-gnu/libXtst.so.6.1.0
7f8134437000-7f8134636000 ---p 00005000 fc:00 137148
/usr/lib/x86_64-linux-gnu/libXtst.so.6.1.0
7f8134636000-7f8134637000 r--p 00004000 fc:00 137148
/usr/lib/x86_64-linux-gnu/libXtst.so.6.1.0
7f8134637000-7f8134638000 rw-p 00005000 fc:00 137148
/usr/lib/x86_64-linux-gnu/libXtst.so.6.1.0
7f8134638000-7f8134641000 r-xp 00000000 fc:00 918676
/lib/x86_64-linux-gnu/libcrypt-2.15.so
7f8134641000-7f8134841000 ---p 00009000 fc:00 918676
/lib/x86_64-linux-gnu/libcrypt-2.15.so
7f8134841000-7f8134842000 r--p 00009000 fc:00 918676
/lib/x86_64-linux-gnu/libcrypt-2.15.so
7f8134842000-7f8134843000 rw-p 0000a000 fc:00 918676
/lib/x86_64-linux-gnu/libcrypt-2.15.so
7f8134843000-7f8134871000 rw-p 00000000 00:00 0
7f8134871000-7f8134a0f000 r-xp 00000000 fc:00 919830
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0
7f8134a0f000-7f8134c0e000 ---p 0019e000 fc:00 919830
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0
7f8134c0e000-7f8134c29000 r--p 0019d000 fc:00 919830
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0
7f8134c29000-7f8134c34000 rw-p 001b8000 fc:00 919830
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0
7f8134c34000-7f8134c38000 rw-p 00000000 00:00 0
7f8134c38000-7f8134c8a000 r-xp 00000000 fc:00 919819
/lib/x86_64-linux-gnu/libssl.so.1.0.0
7f8134c8a000-7f8134e8a000 ---p 00052000 fc:00 919819
/lib/x86_64-linux-gnu/libssl.so.1.0.0
7f8134e8a000-7f8134e8d000 r--p 00052000 fc:00 919819
/lib/x86_64-linux-gnu/libssl.so.1.0.0
7f8134e8d000-7f8134e93000 rw-p 00055000 fc:00 919819
/lib/x86_64-linux-gnu/libssl.so.1.0.0
7f8134e93000-7f8134e94000 rw-p 00000000 00:00 0
7f8134e94000-7f8134eac000 r-xp 00000000 fc:00 918314
/lib/x86_64-linux-gnu/libpthread-2.15.so
7f8134eac000-7f81350ab000 ---p 00018000 fc:00 918314
/lib/x86_64-linux-gnu/libpthread-2.15.so
7f81350ab000-7f81350ac000 r--p 00017000 fc:00 918314
/lib/x86_64-linux-gnu/libpthread-2.15.so
7f81350ac000-7f81350ad000 rw-p 00018000 fc:00 918314
/lib/x86_64-linux-gnu/libpthread-2.15.so
7f81350ad000-7f81350b1000 rw-p 00000000 00:00 0
7f81350b1000-7f81350ce000 r-xp 00000000 fc:00 141191
/usr/lib/x86_64-linux-gnu/libvncclient.so.0.0.0
7f81350ce000-7f81352cd000 ---p 0001d000 fc:00 141191
/usr/lib/x86_64-linux-gnu/libvncclient.so.0.0.0
7f81352cd000-7f81352ce000 r--p 0001c000 fc:00 141191
/usr/lib/x86_64-linux-gnu/libvncclient.so.0.0.0
7f81352ce000-7f81352cf000 rw-p 0001d000 fc:00 141191
/usr/lib/x86_64-linux-gnu/libvncclient.so.0.0.0
7f81352cf000-7f8135317000 r-xp 00000000 fc:00 137646
/usr/lib/x86_64-linux-gnu/libvncserver.so.0.0.0
7f8135317000-7f8135516000 ---p 00048000 fc:00 137646
/usr/lib/x86_64-linux-gnu/libvncserver.so.0.0.0
7f8135516000-7f8135517000 r--p 00047000 fc:00 137646
/usr/lib/x86_64-linux-gnu/libvncserver.so.0.0.0
7f8135517000-7f8135518000 rw-p 00048000 fc:00 137646
/usr/lib/x86_64-linux-gnu/libvncserver.so.0.0.0
7f8135518000-7f813552d000 rw-p 00000000 00:00 0
7f813552d000-7f813554f000 r-xp 00000000 fc:00 919135
/lib/x86_64-linux-gnu/ld-2.15.so
7f8135568000-7f8135586000 rw-s 00000000 00:04 1179684
/SYSV00000000 (deleted)
7f8135586000-7f81355a3000 rw-s 00000000 00:04 1146915
/SYSV00000000 (deleted)
7f81355a3000-7f81355bf000 rw-s 00000000 00:04 1114146
/SYSV00000000 (deleted)
7f81355bf000-7f81355da000 rw-s 00000000 00:04 1081377
/SYSV00000000 (deleted)
7f81355da000-7f81355f4000 rw-s 00000000 00:04 1048608
/SYSV00000000 (deleted)
7f81355f4000-7f813560d000 rw-s 00000000 00:04 1015839
/SYSV00000000 (deleted)
7f813560d000-7f8135625000 rw-s 00000000 00:04 983070
/SYSV00000000 (deleted)
7f8135625000-7f813563c000 rw-s 00000000 00:04 950301
/SYSV00000000 (deleted)
7f813563c000-7f8135652000 rw-s 00000000 00:04 917532
/SYSV00000000 (deleted)
7f8135652000-7f8135667000 rw-s 00000000 00:04 884763
/SYSV00000000 (deleted)
7f8135667000-7f813567b000 rw-s 00000000 00:04 851994
/SYSV00000000 (deleted)
7f813567b000-7f813568e000 rw-s 00000000 00:04 819225
/SYSV00000000 (deleted)
7f813568e000-7f81356a0000 rw-s 00000000 00:04 786456
/SYSV00000000 (deleted)
7f81356a0000-7f81356b1000 rw-s 00000000 00:04 753687
/SYSV00000000 (deleted)
7f81356b1000-7f81356c1000 rw-s 00000000 00:04 720918
/SYSV00000000 (deleted)
7f81356c1000-7f81356d0000 rw-s 00000000 00:04 688149
/SYSV00000000 (deleted)
7f81356d0000-7f81356de000 rw-s 00000000 00:04 655380
/SYSV00000000 (deleted)
7f81356de000-7f81356eb000 rw-s 00000000 00:04 622611
/SYSV00000000 (deleted)
7f81356eb000-7f81356f7000 rw-s 00000000 00:04 589842
/SYSV00000000 (deleted)
7f81356f7000-7f8135702000 rw-s 00000000 00:04 557073
/SYSV00000000 (deleted)
7f8135702000-7f813570c000 rw-s 00000000 00:04 524304
/SYSV00000000 (deleted)
7f813570c000-7f8135715000 rw-s 00000000 00:04 491535
/SYSV00000000 (deleted)
7f8135715000-7f813571d000 rw-s 00000000 00:04 458766
/SYSV00000000 (deleted)
7f813571d000-7f8135728000 rw-p 00000000 00:00 0
7f813572f000-7f8135736000 rw-s 00000000 00:04 425997
/SYSV00000000 (deleted)
7f8135736000-7f813573c000 rw-s 00000000 00:04 393228
/SYSV00000000 (deleted)
7f813573c000-7f8135741000 rw-s 00000000 00:04 360459
/SYSV00000000 (deleted)
7f8135741000-7f8135745000 rw-s 00000000 00:04 327690
/SYSV00000000 (deleted)
7f8135745000-7f8135748000 rw-s 00000000 00:04 294921
/SYSV00000000 (deleted)
7f8135748000-7f813574a000 rw-s 00000000 00:04 262152
/SYSV00000000 (deleted)
7f813574a000-7f813574b000 rw-s 00000000 00:04 229383
/SYSV00000000 (deleted)
7f813574b000-7f813574d000 rw-s 00000000 00:04 163845
/SYSV00000000 (deleted)
7f813574d000-7f813574f000 rw-p 00000000 00:00 0
7f813574f000-7f8135750000 r--p 00022000 fc:00 919135
/lib/x86_64-linux-gnu/ld-2.15.so
7f8135750000-7f8135752000 rw-p 00023000 fc:00 919135
/lib/x86_64-linux-gnu/ld-2.15.so
7fff84c6b000-7fff84c8c000 rw-p 00000000 00:00 0
[stack]
7fff84d49000-7fff84d4a000 r-xp 00000000 00:00 0
[vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0
[vsyscall]
caught signal: 6
23/10/2012 19:40:30 deleted 40 tile_row polling images.
Also, here is my log file showing x11vnc when it does manage to start
up correctly without crashing.
As you can see all is as expected. And yet zero connections are being
made. I attempt to connect to port 5901 and simply cant. Again was
fine before the upgrade to Ubuntu 12.10.
Here is the log of x11vnc when starting correctly:
23/10/2012 20:21:16 passing arg to libvncserver: -rfbport
23/10/2012 20:21:16 passing arg to libvncserver: 5901
23/10/2012 20:21:16 passing arg to libvncserver: -rfbauth
23/10/2012 20:21:16 passing arg to libvncserver: /home/rob/.vnc/passwd
23/10/2012 20:21:16 passing arg to libvncserver: -rfbversion
23/10/2012 20:21:16 passing arg to libvncserver: 3.6
23/10/2012 20:21:16 passing arg to libvncserver: -permitfiletransfer
23/10/2012 20:21:17 x11vnc version: 0.9.13 lastmod: 2011-08-10 pid: 23440
23/10/2012 20:21:17 -auth guess: using 'XAUTHORITY=/var/run/lightdm/root/:0'
for disp=':0'
23/10/2012 20:21:17 Using X display :0
23/10/2012 20:21:17 rootwin: 0x27d reswin: 0x5400001 dpy: 0xcac7e0
23/10/2012 20:21:17
23/10/2012 20:21:17 ------------------ USEFUL INFORMATION ------------------
23/10/2012 20:21:17 X DAMAGE available on display, using it for polling hints.
23/10/2012 20:21:17 To disable this behavior use: '-noxdamage'
23/10/2012 20:21:17
23/10/2012 20:21:17 Most compositing window managers like 'compiz' or
'beryl'
23/10/2012 20:21:17 cause X DAMAGE to fail, and so you may not see any
screen
23/10/2012 20:21:17 updates via VNC. Either disable 'compiz' (recommended)
or
23/10/2012 20:21:17 supply the x11vnc '-noxdamage' command line option.
23/10/2012 20:21:17
23/10/2012 20:21:17 Wireframing: -wireframe mode is in effect for window
moves.
23/10/2012 20:21:17 If this yields undesired behavior (poor response,
painting
23/10/2012 20:21:17 errors, etc) it may be disabled:
23/10/2012 20:21:17 - use '-nowf' to disable wireframing completely.
23/10/2012 20:21:17 - use '-nowcr' to disable the Copy Rectangle after the
23/10/2012 20:21:17 moved window is released in the new position.
23/10/2012 20:21:17 Also see the -help entry for tuning parameters.
23/10/2012 20:21:17 You can press 3 Alt_L's (Left "Alt" key) in a row to
23/10/2012 20:21:17 repaint the screen, also see the -fixscreen option for
23/10/2012 20:21:17 periodic repaints.
23/10/2012 20:21:17 GrabServer control via XTEST.
23/10/2012 20:21:17
23/10/2012 20:21:17 Scroll Detection: -scrollcopyrect mode is in effect to
23/10/2012 20:21:17 use RECORD extension to try to detect scrolling windows
23/10/2012 20:21:17 (induced by either user keystroke or mouse input).
23/10/2012 20:21:17 If this yields undesired behavior (poor response,
painting
23/10/2012 20:21:17 errors, etc) it may be disabled via: '-noscr'
23/10/2012 20:21:17 Also see the -help entry for tuning parameters.
23/10/2012 20:21:17 You can press 3 Alt_L's (Left "Alt" key) in a row to
23/10/2012 20:21:17 repaint the screen, also see the -fixscreen option for
23/10/2012 20:21:17 periodic repaints.
23/10/2012 20:21:17
23/10/2012 20:21:17 Client Side Caching: -ncache mode is in effect to provide
23/10/2012 20:21:17 client-side pixel data caching. This speeds up
23/10/2012 20:21:17 iconifying/deiconifying windows, moving and raising
23/10/2012 20:21:17 windows, and reposting menus. In the simple CopyRect
23/10/2012 20:21:17 encoding scheme used (no compression) a huge amount
23/10/2012 20:21:17 of extra memory (20-100MB) is used on both the server
and
23/10/2012 20:21:17 client sides. This mode works with any VNC viewer.
23/10/2012 20:21:17 However, in most you can actually see the cached pixel
23/10/2012 20:21:17 data by scrolling down, so you need to re-adjust its
size.
23/10/2012 20:21:17 See
http://www.karlrunge.com/x11vnc/faq.html#faq-client-caching.
23/10/2012 20:21:17 If this mode yields undesired behavior (poor response,
23/10/2012 20:21:17 painting errors, etc) it may be disabled via: '-ncache
0'
23/10/2012 20:21:17 You can press 3 Alt_L's (Left "Alt" key) in a row to
23/10/2012 20:21:17 repaint the screen, also see the -fixscreen option for
23/10/2012 20:21:17 periodic repaints.
23/10/2012 20:21:17 X FBPM extension not supported.
23/10/2012 20:21:17 X display is capable of DPMS.
23/10/2012 20:21:17 --------------------------------------------------------
23/10/2012 20:21:17
23/10/2012 20:21:18 Default visual ID: 0x21
23/10/2012 20:21:18 Read initial data from X display into framebuffer.
23/10/2012 20:21:18 initialize_screen: fb_depth/fb_bpp/fb_Bpl 24/32/5120
23/10/2012 20:21:18
23/10/2012 20:21:18 X display :0 is 32bpp depth=24 true color
23/10/2012 20:21:18
23/10/2012 20:21:18 Listening for VNC connections on TCP port 5901
23/10/2012 20:21:18 rfbListenOnTCP6Port: error in bind IPv6 socket: Address
family not supported by protocol
23/10/2012 20:21:18 listen6: socket: Address family not supported by protocol
23/10/2012 20:21:18 (Ignore the above error if this system is IPv4-only.)
23/10/2012 20:21:18 Not listening on IPv6 interface.
23/10/2012 20:21:18
23/10/2012 20:21:18 Xinerama is present and active (e.g. multi-head).
23/10/2012 20:21:18 Xinerama: number of sub-screens: 1
23/10/2012 20:21:18 Xinerama: no blackouts needed (only one sub-screen)
23/10/2012 20:21:18
23/10/2012 20:21:18 fb read rate: 164 MB/sec
23/10/2012 20:21:18 fast read: reset -wait ms to: 10
23/10/2012 20:21:18 fast read: reset -defer ms to: 10
23/10/2012 20:21:18 The X server says there are 10 mouse buttons.
23/10/2012 20:21:18 screen setup finished.
23/10/2012 20:21:18
The VNC desktop is: localhost:1
I went ahead and marked this bug as "This bug is a security
vulnerability" since it involves a buffer overflow. Just in case.
Thanks for the help,
Will
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