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Ubuntu: 1058-1: PostgreSQL vulnerability
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pam_stack(8) System Administrator's Manual pam_stack(8) NAME
pam_stack - recurse into other PAM stacks SYNOPSIS
auth required /lib/security/pam_stack.so service=foo session optional /lib/security/pam_stack.so service=foo password optional /lib/security/pam_stack.so service=foo account optional /lib/security/pam_stack.so service=foo DESCRIPTION
In a nutshell, pam_stack lets you "call", from inside of the stack for a particular service, the stack defined for any another service. The intention is to allow multiple services to "include" a system-wide setup, so that when that setup needs to be changed, it need only be changed in one place. ARGUMENTS
debug turns on debugging via syslog(3). service=name tells pam_stack.so to execute the stack defined for the service name, which will usually be another file in /etc/pam.d. EXAMPLE
/etc/pam.d/imap: auth required /lib/security/pam_stack.so service=system-auth auth required /lib/security/pam_shells.so /etc/pam.d/system-auth: auth sufficient /lib/security/pam_krb5.so auth sufficient /lib/security/pam_unix.so shadow nullok auth required /lib/security/pam_deny.so CAVEAT
Because recursion is fully supported, there is potential to really break things by having a stack call itself either directly or via mutual recursion. BUGS
Let's hope not, but if you find any, please email the author. AUTHOR
Nalin Dahyabhai <nalin@redhat.com> Red Hat Linux 2001/01/30 pam_stack(8)
