Bug 98745 - pam_shells does not accept empty shell field in /etc/passwd
pam_shells does not accept empty shell field in /etc/passwd
Product: Red Hat Linux
Classification: Retired
Component: pam (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Tomas Mraz
Jay Turner
Depends On:
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Reported: 2003-07-08 10:02 EDT by Andreas Luik
Modified: 2015-01-07 19:05 EST (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Last Closed: 2005-02-04 10:08:30 EST
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Description Andreas Luik 2003-07-08 10:02:29 EDT
Description of problem:
According to the README.pam_shells file, if a login has an empty
shell field in /etc/passwd, "/bin/sh" is used.  Although we
have "/bin/sh" in our /etc/shells file, ftp logins are denied by
pam_shells when the login does not have a shell assigned in /etc
passwd.  Everything works well, when /etc/passwd is changed to list
"/bin/sh" (or "/bin/bash") in /etc/passwd.

How reproducible: always

Steps to Reproduce:
1. create login "x1" with empty shell field in /etc/passwd
2. try to "ftp machine" using login "x1"
3. observe, that it is not possible to login with ftp
4. it is possible to login with telnet, though
5. if the shell field in /etc/passwd is changed to "/bin/sh", ftp login is
Comment 1 Tomas Mraz 2005-02-04 10:08:30 EST
The README was modified to reflect the reality in the upstream CVS.

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