[Info-vax] How dangerous is it to be able to get into DCL supervisor mode ?

[Bill Gunshannon]

On 7/3/2017 6:45 PM, Simon Clubley wrote:
> On 2017-07-03, Hans Vlems <hvlems at freenet.de> wrote:
>> If I understand you well then after crashing DCL your process is left in
>> Supervisor mode. Without a CLI how can you exploit that privileged position?
> 
> You don't have a process after DCL crashes. The idea is to try and corrupt
> DCL just enough to be able to execute your shellcode without corrupting
> it enough to actually crash and terminate your process.
> 
> If you find manage to find a way to obtain this level of control then
> that's the point at which a crash becomes an exploit.
> 
> However, at the moment, the process crashes with the following final
> status (from the accounting log):
> 
> Final status text: %SYSTEM-F-NOHANDLER, no condition handler found
> 
Just playing devil's advocate.....

If you can determine the condition is there any way you could install
a handler?  That might lead to some interesting situations.

bill