News for hackers. Stuff that matters.
Re:OpenSSH: client bug CVE-2016-0777 by aexaey on Thursday January 14, 2016 @01:07PM (#10903116)
CVE-2016-0777 doesn't interact with ProxyCommand in any special way. That said, after connecting to hostB with your example config above you will have 2 ssh sessions:

1) from your client to hostA

2) from your client to hostB

So to answer your question - no, vulnerable client on hostA is not a problem (or at least not in this particular use-case).

Re:OpenSSH: client bug CVE-2016-0777 by semi-extrinsic on Thursday January 14, 2016 @01:14PM (#10903182)
> Vulnerable client on hostA is not a problem.

Ok, that's what I was wondering. Thanks.