[GRASS-dev] [GRASS GIS] #1974: buffer overflow in v.to.rast

[GRASS GIS]

#1974: buffer overflow in v.to.rast
-----------------------+----------------------------------------------------
 Reporter:  mgeeves    |       Owner:  grass-dev@…              
     Type:  defect     |      Status:  new                      
 Priority:  minor      |   Milestone:  6.4.3                    
Component:  Vector     |     Version:  6.4.2                    
 Keywords:  v.to.rast  |    Platform:  All                      
      Cpu:  All        |  
-----------------------+----------------------------------------------------

Comment(by mgeeves):

 Hi Hamish,

 Sure - this is on Ubuntu 12.04 LTS, compiled from grass-6.4.2.tar.gz

 Reproducible here from two identical vectors:
 {{{
 v.in.ascii fs=, input=-
 output=p1234567890123456789012345678901234567890123456789012
 0.1,51
 <CTRL+D>

 v.in.ascii fs=, input=-
 output=p12345678901234567890123456789012345678901234567890123
 0.1,51
 <CTRL+D>
 }}}

 This one works
 {{{
 v.to.rast input=p1234567890123456789012345678901234567890123456789012
 output=r_ok use=val
 }}}

 This one fails
 {{{
 v.to.rast input=p12345678901234567890123456789012345678901234567890123
 output=r_nok use=val

 *** buffer overflow detected ***: v.to.rast terminated
 ======= Backtrace: =========
 /lib/i386-linux-gnu/libc.so.6(__fortify_fail+0x45)[0xb763bdd5]
 /lib/i386-linux-gnu/libc.so.6(+0xfebaa)[0xb763abaa]
 /lib/i386-linux-gnu/libc.so.6(+0xfe208)[0xb763a208]
 /lib/i386-linux-gnu/libc.so.6(_IO_default_xsputn+0x91)[0xb75ad461]
 /lib/i386-linux-gnu/libc.so.6(_IO_vfprintf+0x53f0)[0xb7581be0]
 /lib/i386-linux-gnu/libc.so.6(__vsprintf_chk+0xc9)[0xb763a2d9]
 /lib/i386-linux-gnu/libc.so.6(__sprintf_chk+0x2f)[0xb763a1ef]
 v.to.rast(update_hist+0xbd)[0x804b7ad]
 v.to.rast(vect_to_rast+0x438)[0x804cd98]
 v.to.rast(main+0x302)[0x804a432]
 /lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0xb75554d3]
 v.to.rast[0x804a4f9]

 <SNIP>
 }}}

 Hopefully I've not done something daft elsewhere!

 Cheers,
 Mike

-- 
Ticket URL: <https://trac.osgeo.org/grass/ticket/1974#comment:2>
GRASS GIS <http://grass.osgeo.org>