[497] in Kerberos_V5_Development
kdb5_edit crashes
jfc@ATHENA.MIT.EDU (jfc@ATHENA.MIT.EDU)
Wed Dec 12 07:50:52 1990
To crash the RT version of kdb5_edit:
kdb5_edit -e 1
kdb5_edit: ank
ank: Too few arguments
ank: Usage: ank principal
kdb5_edit: ank foo3
Enter password:
Re-enter password for verification:
kdb5_edit: ldb
Segmentation violation (core dumped)
The key sequence seems to be "ank" with no arguments followed by a
valid "ank" command. The malloc pool is corrupted; morecore returns a
bad pointer. I tried linking with a overwrite-checking malloc, and it
didn't crash. This leads me to believe that something is writing past
the end of a string it has allocated but not freed (malloc would
complain if it had been freed).
It is crashing in one of the malloc calls from krb5_parse_name. The
argument to malloc is 8.
