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add admin_group option to pam_faillock (#1285550)

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This commit is contained in:
Tomas Mraz 2017-08-21 16:47:47 +02:00
parent a6e4462d0d
commit 64bde25a45
2 changed files with 141 additions and 3 deletions
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133
pam-1.2.1-faillock-admin-group.patch Normal file
View File

@ -0,0 +1,133 @@
diff -up Linux-PAM-1.3.0/modules/pam_faillock/pam_faillock.c.admin-group Linux-PAM-1.3.0/modules/pam_faillock/pam_faillock.c
--- Linux-PAM-1.3.0/modules/pam_faillock/pam_faillock.c.admin-group 2016-04-04 16:37:38.696260359 +0200
+++ Linux-PAM-1.3.0/modules/pam_faillock/pam_faillock.c 2017-08-21 16:40:01.624706864 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2010 Tomas Mraz <tmraz@redhat.com>
+ * Copyright (c) 2010, 2017 Tomas Mraz <tmraz@redhat.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -78,9 +78,11 @@ struct options {
unsigned int root_unlock_time;
const char *dir;
const char *user;
+ const char *admin_group;
int failures;
uint64_t latest_time;
uid_t uid;
+ int is_admin;
uint64_t now;
};
@@ -152,6 +154,9 @@ args_parse(pam_handle_t *pamh, int argc,
opts->root_unlock_time = temp;
}
}
+ else if (strncmp(argv[i], "admin_group=", 12) == 0) {
+ opts->admin_group = argv[i] + 12;
+ }
else if (strcmp(argv[i], "preauth") == 0) {
opts->action = FAILLOCK_ACTION_PREAUTH;
}
@@ -209,6 +214,17 @@ static int get_pam_user(pam_handle_t *pa
}
opts->user = user;
opts->uid = pwd->pw_uid;
+
+ if (pwd->pw_uid == 0) {
+ opts->is_admin = 1;
+ return PAM_SUCCESS;
+ }
+
+ if (opts->admin_group && *opts->admin_group) {
+ opts->is_admin = pam_modutil_user_in_group_uid_nam(pamh,
+ pwd->pw_uid, opts->admin_group);
+ }
+
return PAM_SUCCESS;
}
@@ -239,7 +255,7 @@ check_tally(pam_handle_t *pamh, struct o
return PAM_SYSTEM_ERR;
}
- if (opts->uid == 0 && !(opts->flags & FAILLOCK_FLAG_DENY_ROOT)) {
+ if (opts->is_admin && !(opts->flags & FAILLOCK_FLAG_DENY_ROOT)) {
return PAM_SUCCESS;
}
@@ -262,13 +278,9 @@ check_tally(pam_handle_t *pamh, struct o
opts->failures = failures;
- if (opts->uid == 0 && !(opts->flags & FAILLOCK_FLAG_DENY_ROOT)) {
- return PAM_SUCCESS;
- }
-
if (opts->deny && failures >= opts->deny) {
- if ((opts->uid && opts->unlock_time && latest_time + opts->unlock_time < opts->now) ||
- (!opts->uid && opts->root_unlock_time && latest_time + opts->root_unlock_time < opts->now)) {
+ if ((!opts->is_admin && opts->unlock_time && latest_time + opts->unlock_time < opts->now) ||
+ (opts->is_admin && opts->root_unlock_time && latest_time + opts->root_unlock_time < opts->now)) {
#ifdef HAVE_LIBAUDIT
if (opts->action != FAILLOCK_ACTION_PREAUTH) { /* do not audit in preauth */
char buf[64];
@@ -401,7 +413,7 @@ write_tally(pam_handle_t *pamh, struct o
audit_log_user_message(audit_fd, AUDIT_ANOM_LOGIN_FAILURES, buf,
NULL, NULL, NULL, 1);
- if (opts->uid != 0 || (opts->flags & FAILLOCK_FLAG_DENY_ROOT)) {
+ if (!opts->is_admin || (opts->flags & FAILLOCK_FLAG_DENY_ROOT)) {
audit_log_user_message(audit_fd, AUDIT_RESP_ACCT_LOCK, buf,
NULL, NULL, NULL, 1);
}
@@ -425,11 +437,11 @@ faillock_message(pam_handle_t *pamh, str
int64_t left;
if (!(opts->flags & FAILLOCK_FLAG_SILENT)) {
- if (opts->uid) {
- left = opts->latest_time + opts->unlock_time - opts->now;
+ if (opts->is_admin) {
+ left = opts->latest_time + opts->root_unlock_time - opts->now;
}
else {
- left = opts->latest_time + opts->root_unlock_time - opts->now;
+ left = opts->latest_time + opts->unlock_time - opts->now;
}
if (left > 0) {
diff -up Linux-PAM-1.3.0/modules/pam_faillock/pam_faillock.8.xml.admin-group Linux-PAM-1.3.0/modules/pam_faillock/pam_faillock.8.xml
--- Linux-PAM-1.3.0/modules/pam_faillock/pam_faillock.8.xml.admin-group 2016-05-06 15:24:10.328281818 +0200
+++ Linux-PAM-1.3.0/modules/pam_faillock/pam_faillock.8.xml 2017-08-21 16:16:09.448033843 +0200
@@ -40,6 +40,9 @@
root_unlock_time=<replaceable>n</replaceable>
</arg>
<arg choice="opt">
+ admin_group=<replaceable>name</replaceable>
+ </arg>
+ <arg choice="opt">
audit
</arg>
<arg choice="opt">
@@ -243,6 +246,20 @@
</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term>
+ <option>admin_group=<replaceable>name</replaceable></option>
+ </term>
+ <listitem>
+ <para>
+ If a group name is specified with this option, members
+ of the group will be handled by this module the same as
+ the root account (the options <option>even_deny_root></option>
+ and <option>root_unlock_time</option> will apply to them.
+ By default the option is not set.
+ </para>
+ </listitem>
+ </varlistentry>
</variablelist>
</refsect1>

11
pam.spec
View File

@ -3,7 +3,7 @@
Summary: An extensible library which provides authentication for applications Summary: An extensible library which provides authentication for applications
Name: pam Name: pam
Version: 1.3.0 Version: 1.3.0
Release: 5%{?dist} Release: 6%{?dist}
# The library is BSD licensed with option to relicense as GPLv2+ # The library is BSD licensed with option to relicense as GPLv2+
# - this option is redundant as the BSD license allows that anyway. # - this option is redundant as the BSD license allows that anyway.
# pam_timestamp, pam_loginuid, and pam_console modules are GPLv2+. # pam_timestamp, pam_loginuid, and pam_console modules are GPLv2+.
@ -30,7 +30,8 @@ Source18: https://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
Patch1: pam-1.2.0-redhat-modules.patch Patch1: pam-1.2.0-redhat-modules.patch
Patch4: pam-1.1.0-console-nochmod.patch Patch4: pam-1.1.0-console-nochmod.patch
Patch5: pam-1.1.0-notally.patch Patch5: pam-1.1.0-notally.patch
Patch8: pam-1.2.1-faillock.patch Patch7: pam-1.2.1-faillock.patch
Patch8: pam-1.2.1-faillock-admin-group.patch
Patch9: pam-1.1.6-noflex.patch Patch9: pam-1.1.6-noflex.patch
Patch10: pam-1.1.3-nouserenv.patch Patch10: pam-1.1.3-nouserenv.patch
Patch13: pam-1.1.6-limits-user.patch Patch13: pam-1.1.6-limits-user.patch
@ -111,7 +112,8 @@ cp %{SOURCE18} .
%patch1 -p1 -b .redhat-modules %patch1 -p1 -b .redhat-modules
%patch4 -p1 -b .nochmod %patch4 -p1 -b .nochmod
%patch5 -p1 -b .notally %patch5 -p1 -b .notally
%patch8 -p1 -b .faillock %patch7 -p1 -b .faillock
%patch8 -p1 -b .admin-group
%patch9 -p1 -b .noflex %patch9 -p1 -b .noflex
%patch10 -p1 -b .nouserenv %patch10 -p1 -b .nouserenv
%patch13 -p1 -b .limits %patch13 -p1 -b .limits
@ -371,6 +373,9 @@ fi
%doc doc/adg/*.txt doc/adg/html %doc doc/adg/*.txt doc/adg/html
%changelog %changelog
* Mon Aug 21 2017 Tomáš Mráz <tmraz@redhat.com> 1.3.0-6
- add admin_group option to pam_faillock (#1285550)
* Thu Aug 03 2017 Fedora Release Engineering <releng@fedoraproject.org> - 1.3.0-5 * Thu Aug 03 2017 Fedora Release Engineering <releng@fedoraproject.org> - 1.3.0-5
- Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Binutils_Mass_Rebuild - Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Binutils_Mass_Rebuild