[Bug 415432] [NEW] Buffer overflow in mkdisk

[mathew]

Public bug reported:

Trying to create a hard disk image for use with xtrs, as per the man
page:

$ mkdisk -h harddisk.hdv
*** buffer overflow detected ***: mkdisk terminated
======= Backtrace: =========
/lib/tls/i686/cmov/libc.so.6(__fortify_fail+0x48)[0xb7edfda8]
/lib/tls/i686/cmov/libc.so.6[0xb7eddeb0]
/lib/tls/i686/cmov/libc.so.6(__strcpy_chk+0x44)[0xb7edd184]
mkdisk[0x80492c0]
/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe5)[0xb7df8775]
mkdisk[0x8048841]
======= Memory map: ========
08048000-0804a000 r-xp 00000000 08:03 338909     /usr/bin/mkdisk
0804a000-0804b000 r--p 00001000 08:03 338909     /usr/bin/mkdisk
0804b000-0804c000 rw-p 00002000 08:03 338909     /usr/bin/mkdisk
09d2d000-09d4e000 rw-p 09d2d000 00:00 0          [heap]
b7dd2000-b7ddf000 r-xp 00000000 08:03 301985     /lib/libgcc_s.so.1
b7ddf000-b7de0000 r--p 0000c000 08:03 301985     /lib/libgcc_s.so.1
b7de0000-b7de1000 rw-p 0000d000 08:03 301985     /lib/libgcc_s.so.1
b7de1000-b7de2000 rw-p b7de1000 00:00 0
b7de2000-b7f3e000 r-xp 00000000 08:03 319595     /lib/tls/i686/cmov/libc-2.9.so
b7f3e000-b7f3f000 ---p 0015c000 08:03 319595     /lib/tls/i686/cmov/libc-2.9.so
b7f3f000-b7f41000 r--p 0015c000 08:03 319595     /lib/tls/i686/cmov/libc-2.9.so
b7f41000-b7f42000 rw-p 0015e000 08:03 319595     /lib/tls/i686/cmov/libc-2.9.so
b7f42000-b7f45000 rw-p b7f42000 00:00 0
b7f5a000-b7f5c000 rw-p b7f5a000 00:00 0
b7f5c000-b7f5d000 r-xp b7f5c000 00:00 0          [vdso]
b7f5d000-b7f79000 r-xp 00000000 08:03 301943     /lib/ld-2.9.so
b7f79000-b7f7a000 r--p 0001b000 08:03 301943     /lib/ld-2.9.so
b7f7a000-b7f7b000 rw-p 0001c000 08:03 301943     /lib/ld-2.9.so
bfb66000-bfb7b000 rw-p bffeb000 00:00 0          [stack]
Aborted

$ lsb_release -rd
Description:    Ubuntu 9.04
Release:        9.04
$ apt-cache policy xtrs
xtrs:
  Installed: 4.9c-3ubuntu2
  Candidate: 4.9c-3ubuntu2
  Version table:
 *** 4.9c-3ubuntu2 0
        500 http://us.archive.ubuntu.com jaunty/multiverse Packages
        100 /var/lib/dpkg/status

** Affects: xtrs (Ubuntu)
     Importance: Undecided
         Status: New

-- 
Buffer overflow in mkdisk
https://bugs.launchpad.net/bugs/415432
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