Red Hat Bugzilla – Bug 85634
ssh-agent authentication problems due to stupid limitation (only 40 environment variables are passed to ssh)
Last modified: 2015-03-04 20:12:04 EST
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Description of problem:
rdist 6.1.5 has a stupid limitation. When it invokes rsh (or a replacement),
only 40 environment variables are passed.
This is annoying when one uses ssh as transport, with the ssh-agent
to avoid having to type the password each time. Chances are
that the SSH_AUTH_SOCK variable is dropped. In this case, ssh will
not use the ssh-agent but ask for a password instead.
A typical environment nowadays has ~40 variables (at least after logging into
KDE), do this can be a problem for a lot of people.
Fixing the bug is probably simple: change the constant 40 to say 1024
in the source code and recompile rdist.
rdist 7.0.0alpha10 fixes this bug but is unstable otherwise (the make install
rule is broken).
As far as I can see, the bug was not fixed in any later version of the Red Hat RPM.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. set up ssh-agent authentication for a remote host
2. use ssh-add
3. add lots of environment variables (so that you have a lot more than 40)
4. call rdist with ssh as transport
Actual Results: rdist asks for a password (probably; there is no guarantee that
rdist will drop the SSH_AUTH_SOCK variable).
Expected Results: rdist should transfer the files without asking for a password.
Fixed in rdis-6.1.5-30 and later.
Read ya, Phil
An errata has been issued which should help the problem described in this bug report.
This report is therefore being closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files, please follow the link below. You may reopen
this bug report if the solution does not work for you.