So, /.sh_history becomes world readable, and text similar to
-------------------Start Event--------------------
Event 382 occurred at Wed Nov 8 09:45:28.818524 2000
Process ID: 10931 (/etc/opt/resmon/lbin/registrar) Log Level: Error
_rm_recv: Couldn't malloc 1073803312 bytes for receive buffer
-------------------End Event----------------------
Gets appended to it.
Solution:
The vulnerability has been fixed on HP-UX 11.