[mapguide-users] Buffer Overflow on MGOS 2.1

[John Lee]

Hello all,

I'm having trouble with my MGOS 2.1 server crashing due to a buffer overflow 
problem. 


Using VirtualBox 3.2.8, I installed Ubuntu 9.04 and then based off the existing 
guide on building MGOS 2.0 on Ubuntu 8.04 
(http://wiki.osgeo.org/wiki/Building_MapGuide_on_Ubuntu_8.04), I have 
successfully built MGOS 2.1 sourced from the SVN without any errors in the log 
files. After successfully building it, I started the server from the shell and 
then tested it with a SHP file. Previewing the data in the Data Connection works 
fine, but when I tried to preview the layer the server crashes with a buffer 
overflow error. The same happens even when I try to skip previewing the layer 
and add the layer to the map and previewed the map. I am currently at my wits 
end as I had zero experience with Linux or compiling large projects before this, 
this is my second month.

I am not sure of the etiquette for sending log data, should I paste it in the 
e-mail or attach it? As the shell backtrace is rather short, I've chosen to 
paste it here for expediency. Please forgive me if this was a bad choice.



[Start]

user at test:~$ sudo /usr/local/mapguideopensource/server/bin/mgserver.sh
/usr/local/mapguideopensource/server/bin ~
Running the server interactively as an application instead of as a service.

(3023657456) Server starting...
(3023657456) Mentor Coordinate System Library
(3023657456) Server started.
*** buffer overflow detected ***: ./mgserver terminated
======= Backtrace: =========
/lib/tls/i686/cmov/libc.so.6(__fortify_fail+0x48)[0xb48aeef8]
/lib/tls/i686/cmov/libc.so.6[0xb48ad000]
/lib/tls/i686/cmov/libc.so.6[0xb48adef7]
/usr/local/mapguideopensource/lib/libACE.so.5.4.0(_ZN6ACE_OS7sprintfEPwPKwz+0x43)[0xb5e72023]

/usr/local/mapguideopensource/server/lib/libMgServerMappingService.so.7(_ZN23MgOpGenerateLegendImage7ExecuteEv+0x880)[0xb6d74800]

/usr/local/mapguideopensource/server/lib/libMgServerMappingService.so.7(_ZN23MgMappingServiceHandler16ProcessOperationEv+0x6b)[0xb6dae4db]

./mgserver[0x80b399a]
./mgserver[0x80b5876]
./mgserver[0x80b788f]
/usr/local/mapguideopensource/lib/libACE.so.5.4.0(_ZN13ACE_Task_Base7svc_runEPv+0x56)[0xb5f114b6]

/usr/local/mapguideopensource/lib/libACE.so.5.4.0(_ZN18ACE_Thread_Adapter8invoke_iEv+0x5d)[0xb5eb27ed]

/usr/local/mapguideopensource/lib/libACE.so.5.4.0(_ZN18ACE_Thread_Adapter6invokeEv+0x66)[0xb5eb2856]

/usr/local/mapguideopensource/lib/libACE.so.5.4.0(ace_thread_adapter+0x10)[0xb5e74bd0]

/lib/tls/i686/cmov/libpthread.so.0[0xb57884ff]
/lib/tls/i686/cmov/libc.so.6(clone+0x5e)[0xb48955ee]
======= Memory map: ========
08048000-08117000 r-xp 00000000 08:01 557058     
/usr/local/mapguideopensource/server/bin/mgserver
08117000-08118000 rw-p 000cf000 08:01 557058     
/usr/local/mapguideopensource/server/bin/mgserver
09668000-09bbe000 rw-p 09668000 00:00 0          [heap]
a8e34000-a8fb7000 r-xp 00000000 08:01 462445     
/usr/local/fdo-3.4.0/lib/libSHPProvider-3.4.0.so
a8fb7000-a8fc0000 rw-p 00183000 08:01 462445     
/usr/local/fdo-3.4.0/lib/libSHPProvider-3.4.0.so
a8fc0000-a8fd0000 rw-p a8fc0000 00:00 0
a8fd0000-a8fd1000 ---p a8fd0000 00:00 0
a8fd1000-a90d1000 rw-p a8fd1000 00:00 0
a90d1000-a90d2000 ---p a90d1000 00:00 0
a90d2000-a91d2000 rw-p a90d2000 00:00 0
a91d2000-a91d3000 ---p a91d2000 00:00 0
a91d3000-a92d3000 rw-p a91d3000 00:00 0
a92d3000-a92d4000 ---p a92d3000 00:00 0
a92d4000-a93d4000 rw-p a92d4000 00:00 0
a93d4000-a93d5000 ---p a93d4000 00:00 0
a93d5000-a94d5000 rw-p a93d5000 00:00 0
a94d5000-a94d6000 ---p a94d5000 00:00 0
a94d6000-a95d6000 rw-p a94d6000 00:00 0
a95d6000-a95d7000 ---p a95d6000 00:00 0
a95d7000-a96d7000 rw-p a95d7000 00:00 0
a96d7000-a96d8000 ---p a96d7000 00:00 0
a96d8000-a97d8000 rw-p a96d8000 00:00 0
a97d8000-a97d9000 ---p a97d8000 00:00 0
a97d9000-a98d9000 rw-p a97d9000 00:00 0
a98d9000-a98da000 ---p a98d9000 00:00 0
a98da000-a99da000 rw-p a98da000 00:00 0
a99da000-a99db000 ---p a99da000 00:00 0
a99db000-a9adb000 rw-p a99db000 00:00 0
a9adb000-a9adc000 ---p a9adb000 00:00 0
a9adc000-a9bdc000 rw-p a9adc000 00:00 0
a9bdc000-a9bdd000 ---p a9bdc000 00:00 0
a9bdd000-a9cdd000 rw-p a9bdd000 00:00 0
a9cdd000-a9cde000 ---p a9cdd000 00:00 0
a9cde000-a9dde000 rw-p a9cde000 00:00 0
a9dde000-a9ddf000 ---p a9dde000 00:00 0
a9ddf000-a9edf000 rw-p a9ddf000 00:00 0
a9edf000-a9ee0000 ---p a9edf000 00:00 0
a9ee0000-a9fe0000 rw-p a9ee0000 00:00 0
a9fe0000-a9fe1000 ---p a9fe0000 00:00 0
a9fe1000-aa0e1000 rw-p a9fe1000 00:00 0
aa0e1000-aa0e2000 ---p aa0e1000 00:00 0
aa0e2000-aa1e2000 rw-p aa0e2000 00:00 0
aa1e2000-aa1e3000 ---p aa1e2000 00:00 0
aa1e3000-aa2e3000 rw-p aa1e3000 00:00 0
aa2e3000-aa2e4000 ---p aa2e3000 00:00 0
aa2e4000-aa3e4000 rw-p aa2e4000 00:00 0
aa3e4000-aa3e5000 ---p aa3e4000 00:00 0
aa3e5000-aa4e5000 rw-p aa3e5000 00:00 0
aa4e5000-aa4e6000 ---p aa4e5000 00:00 0
aa4e6000-aa5e6000 rw-p aa4e6000 00:00 0
aa5e6000-aa5e7000 ---p aa5e6000 00:00 0
aa5e7000-aa6e7000 rw-p aa5e7000 00:00 0
aa6e7000-aa6e8000 ---p aa6e7000 00:00 0
aa6e8000-aa7e8000 rw-p aa6e8000 00:00 0
aa7e8000-aa7e9000 ---p aa7e8000 00:00 0
aa7e9000-aa8e9000 rw-p aa7e9000 00:00 0
aa8e9000-aa8ea000 ---p aa8e9000 00:00 0
aa8ea000-aa9ea000 rw-p aa8ea000 00:00 0
aa9ea000-aa9eb000 ---p aa9ea000 00:00 0
aa9eb000-aaaeb000 rw-p aa9eb000 00:00 0
aaaeb000-aaaec000 ---p aaaeb000 00:00 0
aaaec000-aabec000 rw-p aaaec000 00:00 0
aabec000-aabed000 ---p aabec000 00:00 0
aabed000-a/usr/local/mapguideopensource/server/bin/mgserver.sh: line 7: 20291 
Aborted                 ./mgserver run
~
user at test:~$

[End]



If more information is needed, I would be happy to provide what I can.

Will anybody be interested in my build script? I had to make a lot of 
adjustments before MGOS 2.1 will compile without errors.

Thank you very much for your time.