Openmoko Bug #2226: [passwd] crashes (glibc-free()) when NEW password length > 8

[Openmoko Public Trac]

#2226: [passwd] crashes (glibc-free()) when NEW password length > 8
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 Reporter:  leadman  |          Owner:  julian_chu                                                
     Type:  defect   |         Status:  new                                                       
 Priority:  normal   |      Milestone:  Om2008.12                                                 
Component:  Distro   |        Version:  current svn head                                          
 Severity:  normal   |       Keywords:  passwd glibc free crash aborted feeds gdb backtrace strace
 Haspatch:  0        |      Blockedby:                                                            
Estimated:           |    Patchreview:                                                            
 Blocking:           |   Reproducible:  always                                                    
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 1) Images: daily , testing, 2009.01.20
   testing-om-gta02-20090120.uImage.bin
   openmoko-testing-om-gta02.rootfs.jffs2

 2) Description:
 as an unprivileged user, `passwd` command crashes when changing password
 to new one, which is longer than 8 characters. Seems to be NOT affected
 when calling `passwd` as root.

 3) Steps to reproduce:
 root at om-gta02:~# adduser test
 root at om-gta02:~# passwd test
 Changing password for test
 Enter the new password (minimum of 5, maximum of 8 characters)
 Please use a combination of upper and lower case letters and numbers.
 Enter new password:             /* I have entered password of 10
 characters length */
 Re-enter new password:          /* I have entered password of 10
 characters length */
 Password changed.
 root at om-gta02:~# su test        /* OR root at om-gta02:~# su - test */
 test at om-gta02:~$ passwd
 Changing password for test
 Old password:
 Enter the new password (minimum of 5, maximum of 8 characters)
 Please use a combination of upper and lower case letters and numbers.
 Enter new password:             /* I have entered password of 10
 characters length */
 *** glibc detected *** passwd: free(): invalid next size (fast):
 0x0001f878 ***
 Aborted

 ( Above is pretty self explaining, but well, if you guys really need
 this... here are next steps.)
 4) Current result
 Currently unprivileged user is unable to change his/her password

 5) Expected result
 Unprivileged user is expected to be able to change his/her password

 6) Reproducible
 Always

 Attachements:
  gdb-passwd.txt
  list_installed.txt
  opkg
  strace-passwd.txt
 ./opkg:
  all-feed.conf
  arch.conf
  armv4t-feed.conf
  Multiverse-feed.conf
  navit-feed.conf
  om-gta02-feed.conf

 P.S.I couldn't find info what to fill into "Blocking" "CC"(my email?) and
 "Blocked by"
 --
 Kind regards
 LeadMan

-- 
Ticket URL: <https://docs.openmoko.org/trac/ticket/2226>
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