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Rev

This does not answer my question as I am still accessing the existing C PAM functions. The ones detailed at the Linux PAM application developer guide which should let you implement programs like 'su' So I don't have to have access to the authentication data as far as I am aware, because how could the program as I have it now authenticate one user but not all others if I had no access at all? You are however correct in not not assigning the process root privileges, which is exactly why I am implementing PAM.

Zimrilim
– Zimrilim

2013-03-01 14:21:09 +00:00
Commented Mar 1, 2013 at 14:21
@Zimrilim I added the correct reason to the answer why a user can authenticate himself. But except of this, already the developer guide says what I answered: "PAM modules generally have no increased privilege over that possessed by the application that is making use of it.". Please note that all programs that can authenticate have a SETUID/SETGID flag set or run as root like the ssh daemon.

jofel
– jofel

2013-03-02 23:29:12 +00:00
Commented Mar 2, 2013 at 23:29
1

My apologies. I feel really stupid for having overlooked this. I did get the impression from the manuals and explanations that I found that you didn't need to have a separate part of the program with heightened permissions to authenticate any user. With this though it is perfectly clear now. Thank you.

Zimrilim
– Zimrilim

2013-03-07 09:22:14 +00:00
Commented Mar 7, 2013 at 9:22

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