Several PAM fixes
- pam_lastlog: check localtime_r() return value - pam_faillock: clarify missing user faillock files after reboot - pam_faillock: avoid logging an erroneous consecutive login failure message Resolves: #2130124 Resolves: #2126632 Resolves: #2126648 Signed-off-by: Iker Pedrosa <ipedrosa@redhat.com>
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Iker Pedrosa
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158ed61997
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From 10086bc69663fa819277af244eeb5b629a2403b8 Mon Sep 17 00:00:00 2001
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From: Deepak Das <ddas@redhat.com>
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Date: Mon, 10 Oct 2022 21:21:35 +0530
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Subject: [PATCH] pam_faillock: avoid logging an erroneous consecutive login
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failure message
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* modules/pam_faillock/pam_faillock.c (write_tally): Avoid logging
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a consecutive login failure message for the root user in case when
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even_deny_root is not set.
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Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2082442
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---
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modules/pam_faillock/pam_faillock.c | 8 +++++---
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1 file changed, 5 insertions(+), 3 deletions(-)
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diff --git a/modules/pam_faillock/pam_faillock.c b/modules/pam_faillock/pam_faillock.c
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index ddbb90e7..ca1c7035 100644
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--- a/modules/pam_faillock/pam_faillock.c
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+++ b/modules/pam_faillock/pam_faillock.c
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@@ -374,9 +374,11 @@ write_tally(pam_handle_t *pamh, struct options *opts, struct tally_data *tallies
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}
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close(audit_fd);
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#endif
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- if (!(opts->flags & FAILLOCK_FLAG_NO_LOG_INFO)) {
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- pam_syslog(pamh, LOG_INFO, "Consecutive login failures for user %s account temporarily locked",
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- opts->user);
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+ if (!(opts->flags & FAILLOCK_FLAG_NO_LOG_INFO) &&
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+ ((opts->flags & FAILLOCK_FLAG_DENY_ROOT) || (opts->uid != 0))) {
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+ pam_syslog(pamh, LOG_INFO,
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+ "Consecutive login failures for user %s account temporarily locked",
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+ opts->user);
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}
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}
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--
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2.38.1
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@ -0,0 +1,53 @@
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From bcbf145ce925934214e48200c27c9ff736452549 Mon Sep 17 00:00:00 2001
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From: Deepak Das <ddas@redhat.com>
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Date: Mon, 10 Oct 2022 17:55:53 +0530
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Subject: [PATCH] pam_faillock: Clarify missing user faillock files after
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reboot
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* modules/pam_faillock/faillock.conf.5.xml: Adding note related to missing
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user specific faillock files after reboot.
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* modules/pam_faillock/pam_faillock.8.xml: Adding note related to missing
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user specific faillock files after reboot.
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Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2062512
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---
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modules/pam_faillock/faillock.conf.5.xml | 4 ++++
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modules/pam_faillock/pam_faillock.8.xml | 6 ++++++
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2 files changed, 10 insertions(+)
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diff --git a/modules/pam_faillock/faillock.conf.5.xml b/modules/pam_faillock/faillock.conf.5.xml
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index 04a84107..8faa5915 100644
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--- a/modules/pam_faillock/faillock.conf.5.xml
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+++ b/modules/pam_faillock/faillock.conf.5.xml
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@@ -44,6 +44,10 @@
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The directory where the user files with the failure records are kept. The
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default is <filename>/var/run/faillock</filename>.
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</para>
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+ <para>
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+ Note: These files will disappear after reboot on systems configured with
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+ directory <filename>/var/run/faillock</filename> mounted on virtual memory.
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+ </para>
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</listitem>
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</varlistentry>
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<varlistentry>
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diff --git a/modules/pam_faillock/pam_faillock.8.xml b/modules/pam_faillock/pam_faillock.8.xml
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index 79bcbbd0..b7b7b0db 100644
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--- a/modules/pam_faillock/pam_faillock.8.xml
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+++ b/modules/pam_faillock/pam_faillock.8.xml
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@@ -327,6 +327,12 @@ session required pam_selinux.so open
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<term><filename>/var/run/faillock/*</filename></term>
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<listitem>
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<para>the files logging the authentication failures for users</para>
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+ <para>
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+ Note: These files will disappear after reboot on systems configured with
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+ directory <filename>/var/run/faillock</filename> mounted on virtual memory.
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+ For persistent storage use the option <emphasis>dir=</emphasis> in
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+ file <filename>/etc/security/faillock.conf</filename>.
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+ </para>
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</listitem>
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</varlistentry>
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<varlistentry>
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--
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2.38.1
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@ -0,0 +1,41 @@
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From 40c271164dbcebfc5304d0537a42fb42e6b6803c Mon Sep 17 00:00:00 2001
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From: Iker Pedrosa <ipedrosa@redhat.com>
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Date: Mon, 26 Sep 2022 12:16:53 +0200
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Subject: [PATCH] pam_lastlog: check localtime_r() return value
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Check the return value of localtime_r() before calling strftime(). This
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function crashes if the argument is NULL.
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Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2012871
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Signed-off-by: Iker Pedrosa <ipedrosa@redhat.com>
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---
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modules/pam_lastlog/pam_lastlog.c | 12 ++++++------
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1 file changed, 6 insertions(+), 6 deletions(-)
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diff --git a/modules/pam_lastlog/pam_lastlog.c b/modules/pam_lastlog/pam_lastlog.c
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index abd048df..121e7560 100644
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--- a/modules/pam_lastlog/pam_lastlog.c
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+++ b/modules/pam_lastlog/pam_lastlog.c
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@@ -573,12 +573,12 @@ last_login_failed(pam_handle_t *pamh, int announce, const char *user, time_t llt
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time_t lf_time;
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lf_time = utuser.ut_tv.tv_sec;
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- tm = localtime_r (&lf_time, &tm_buf);
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- strftime (the_time, sizeof (the_time),
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- /* TRANSLATORS: "strftime options for date of last login" */
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- _(" %a %b %e %H:%M:%S %Z %Y"), tm);
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-
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- date = the_time;
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+ if ((tm = localtime_r (&lf_time, &tm_buf)) != NULL) {
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+ strftime (the_time, sizeof (the_time),
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+ /* TRANSLATORS: "strftime options for date of last login" */
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+ _(" %a %b %e %H:%M:%S %Z %Y"), tm);
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+ date = the_time;
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+ }
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}
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/* we want & have the host? */
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--
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2.38.1
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16
pam.spec
16
pam.spec
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@ -3,7 +3,7 @@
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Summary: An extensible library which provides authentication for applications
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Name: pam
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Version: 1.5.1
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Release: 13%{?dist}
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Release: 14%{?dist}
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# The library is BSD licensed with option to relicense as GPLv2+
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# - this option is redundant as the BSD license allows that anyway.
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# pam_timestamp, pam_loginuid, and pam_console modules are GPLv2+.
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@ -42,6 +42,12 @@ Patch9: pam-1.5.1-pam-usertype-SYS_UID_MAX.patch
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# https://github.com/linux-pam/linux-pam/commit/ba2f6dd8b81ea2a58262c1709bec906b6852591d
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# https://github.com/linux-pam/linux-pam/commit/1180bde923a22605fe8075cd1fe7992ed7513411
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Patch10: pam-1.5.1-pam-pwhistory-load-conf-from-file.patch
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# https://github.com/linux-pam/linux-pam/commit/40c271164dbcebfc5304d0537a42fb42e6b6803c
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Patch11: pam-1.5.1-pam-lastlog-check-localtime_r-return-value.patch
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# https://github.com/linux-pam/linux-pam/commit/bcbf145ce925934214e48200c27c9ff736452549
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Patch12: pam-1.5.1-pam-faillock-clarify-missing-user.patch
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# https://github.com/linux-pam/linux-pam/commit/10086bc69663fa819277af244eeb5b629a2403b8
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Patch13: pam-1.5.1-pam-faillock-avoid-logging-erroneous.patch
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%global _pamlibdir %{_libdir}
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%global _moduledir %{_libdir}/security
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@ -134,6 +140,9 @@ cp %{SOURCE18} .
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%patch8 -p1 -b .faillock-load-conf-from-file
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%patch9 -p1 -b .pam-usertype-SYS_UID_MAX
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%patch10 -p1 -b .pam-pwhistory-load-conf-from-file
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%patch11 -p1 -b .pam-lastlog-check-localtime_r-return-value
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%patch12 -p1 -b .pam-faillock-clarify-missing-user
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%patch13 -p1 -b .pam-faillock-avoid-logging-erroneous
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autoreconf -i
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@ -389,6 +398,11 @@ done
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%doc doc/sag/*.txt doc/sag/html
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%changelog
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* Tue Nov 29 2022 Iker Pedrosa <ipedrosa@redhat.com> - 1.5.1-14
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- pam_lastlog: check localtime_r() return value. Resolves: #2130124
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- pam_faillock: clarify missing user faillock files after reboot. Resolves: #2126632
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- pam_faillock: avoid logging an erroneous consecutive login failure message. Resolves: #2126648
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* Wed Sep 28 2022 Iker Pedrosa <ipedrosa@redhat.com> - 1.5.1-13
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- pam_pwhistory: load configuration from file. Resolves: #2126640
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