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import fapolicyd-1.1.3-102.el9_1.7

This commit is contained in:
CentOS Sources 2023-01-23 09:31:58 -05:00 committed by Stepan Oksanichenko
parent dae0fc63cd
commit 13d3b58081
8 changed files with 360 additions and 3 deletions
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170
SOURCES/fapolicyd-markfs-1.patch Normal file
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@ -0,0 +1,170 @@
From 2d15ea13e2a3dca1bb159f2cf031ca437c0b9aa1 Mon Sep 17 00:00:00 2001
From: Steve Grubb <sgrubb@redhat.com>
Date: Tue, 27 Sep 2022 10:33:44 -0400
Subject: [PATCH] Add support for using FAN_MARK_FILESYSTEM to see bind mounted
accesses
---
ChangeLog | 1 +
configure.ac | 1 +
doc/fapolicyd.conf.5 | 5 ++++-
init/fapolicyd.conf | 1 +
src/daemon/notify.c | 12 ++++++++++--
src/library/conf.h | 3 ++-
src/library/daemon-config.c | 28 +++++++++++++++++++++++++++-
7 files changed, 46 insertions(+), 5 deletions(-)
diff --git a/configure.ac b/configure.ac
index 4437685..a67c46b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -56,6 +56,7 @@ AC_CHECK_DECLS([FAN_OPEN_EXEC_PERM], [perm=yes], [perm=no], [[#include <linux/fa
if test $perm = "no"; then
AC_MSG_ERROR([FAN_OPEN_EXEC_PERM is not defined in linux/fanotify.h. It is required for the kernel to support it])
fi
+AC_CHECK_DECLS([FAN_MARK_FILESYSTEM], [], [], [[#include <linux/fanotify.h>]])
withval=""
AC_ARG_WITH(rpm,
diff --git a/doc/fapolicyd.conf.5 b/doc/fapolicyd.conf.5
index 812cfa4..d8cb296 100644
--- a/doc/fapolicyd.conf.5
+++ b/doc/fapolicyd.conf.5
@@ -1,4 +1,4 @@
-.TH FAPOLICYD.CONF: "6" "October 2021" "Red Hat" "System Administration Utilities"
+.TH FAPOLICYD.CONF: "6" "September 2022" "Red Hat" "System Administration Utilities"
.SH NAME
fapolicyd.conf \- fapolicyd configuration file
.SH DESCRIPTION
@@ -87,6 +87,9 @@ Example:
.B rpm_sha256_only
The option set to 1 forces the daemon to work only with SHA256 hashes. This is useful on the systems where the integrity is set to SHA256 or IMA and some rpms were originally built with e.g. SHA1. The daemon will ingore these SHA1 entries therefore they can be added manually via CLI with correct SHA256 to a trust file later. If set to 0 the daemon stores SHA1 in trustdb as well. This is compatible with older behavior which works with the integrity set to NONE and SIZE. The NONE or SIZE integrity setting considers the files installed via rpm as trusted and it does not care about their hashes at all. On the other hand the integrity set to SHA256 or IMA will never consider a file with SHA1 in trustdb as trusted. The default value is 0.
+.TP
+.B allow_filesystem_mark
+When this option is set to 1, it allows fapolicyd to monitor file access events on the underlying file system when they are bind mounted or are overlayed (e.g. the overlayfs). Normally they block fapolicyd from seeing events on the underlying file systems. This may or may not be desirable. For example, you might start seeing containers accessing things outside of the container but there is no source of trust for the container. In that case you probably do not want to see access from the container. Or maybe you do not use containers but want to control anything run by systemd-run when dynamic users are allowed. In that case you probably want to turn it on. Not all kernel's supoport this option. Therefore the default value is 0.
.SH "SEE ALSO"
.BR fapolicyd (8),
diff --git a/init/fapolicyd.conf b/init/fapolicyd.conf
index 42e8798..8363b89 100644
--- a/init/fapolicyd.conf
+++ b/init/fapolicyd.conf
@@ -18,3 +18,4 @@ trust = rpmdb,file
integrity = none
syslog_format = rule,dec,perm,auid,pid,exe,:,path,ftype,trust
rpm_sha256_only = 0
+allow_filesystem_mark = 0
diff --git a/src/daemon/notify.c b/src/daemon/notify.c
index f550e99..c91abc4 100644
--- a/src/daemon/notify.c
+++ b/src/daemon/notify.c
@@ -123,8 +123,16 @@ int init_fanotify(const conf_t *conf, mlist *m)
path = mlist_first(m);
while (path) {
retry_mark:
- if (fanotify_mark(fd, FAN_MARK_ADD | FAN_MARK_MOUNT,
- mask, -1, path) == -1) {
+ unsigned int flags = FAN_MARK_ADD;
+#ifdef HAVE_DECL_FAN_MARK_FILESYSTEM
+ if (conf->allow_filesystem_mark)
+ flags |= FAN_MARK_FILESYSTEM;
+#else
+ if (conf->allow_filesystem_mark)
+ msg(LOG_ERR,
+ "allow_filesystem_mark is unsupported for this kernel - ignoring");
+#endif
+ if (fanotify_mark(fd, flags, mask, -1, path) == -1) {
/*
* The FAN_OPEN_EXEC_PERM mask is not supported by
* all kernel releases prior to 5.0. Retry setting
diff --git a/src/library/conf.h b/src/library/conf.h
index e774ff6..57c19a2 100644
--- a/src/library/conf.h
+++ b/src/library/conf.h
@@ -1,5 +1,5 @@
/* conf.h configuration structure
- * Copyright 2018-20 Red Hat Inc.
+ * Copyright 2018-20,22 Red Hat Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
@@ -45,6 +45,7 @@ typedef struct conf
integrity_t integrity;
const char *syslog_format;
unsigned int rpm_sha256_only;
+ unsigned int allow_filesystem_mark;
} conf_t;
#endif
diff --git a/src/library/daemon-config.c b/src/library/daemon-config.c
index e803e0b..89b7f68 100644
--- a/src/library/daemon-config.c
+++ b/src/library/daemon-config.c
@@ -1,7 +1,7 @@
/*
* daemon-config.c - This is a config file parser
*
- * Copyright 2018-21 Red Hat Inc.
+ * Copyright 2018-22 Red Hat Inc.
* All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
@@ -92,6 +92,8 @@ static int syslog_format_parser(const struct nv_pair *nv, int line,
conf_t *config);
static int rpm_sha256_only_parser(const struct nv_pair *nv, int line,
conf_t *config);
+static int fs_mark_parser(const struct nv_pair *nv, int line,
+ conf_t *config);
static const struct kw_pair keywords[] =
{
@@ -110,6 +112,7 @@ static const struct kw_pair keywords[] =
{"integrity", integrity_parser },
{"syslog_format", syslog_format_parser },
{"rpm_sha256_only", rpm_sha256_only_parser},
+ {"allow_filesystem_mark", fs_mark_parser },
{ NULL, NULL }
};
@@ -138,6 +141,7 @@ static void clear_daemon_config(conf_t *config)
config->syslog_format =
strdup("rule,dec,perm,auid,pid,exe,:,path,ftype");
config->rpm_sha256_only = 0;
+ config->allow_filesystem_mark = 0;
}
int load_daemon_config(conf_t *config)
@@ -590,6 +594,7 @@ static int syslog_format_parser(const struct nv_pair *nv, int line,
return 1;
}
+
static int rpm_sha256_only_parser(const struct nv_pair *nv, int line,
conf_t *config)
{
@@ -607,3 +612,24 @@ static int rpm_sha256_only_parser(const struct nv_pair *nv, int line,
return rc;
}
+
+
+static int fs_mark_parser(const struct nv_pair *nv, int line,
+ conf_t *config)
+{
+ int rc = 0;
+#ifndef HAVE_DECL_FAN_MARK_FILESYSTEM
+ msg(LOG_WARNING,
+ "allow_filesystem_mark is unsupported on this kernel - ignoring");
+#else
+ rc = unsigned_int_parser(&(config->allow_filesystem_mark), nv->value, line);
+
+ if (rc == 0 && config->allow_filesystem_mark > 1) {
+ msg(LOG_WARNING,
+ "allow_filesystem_mark value reset to 0 - line %d", line);
+ config->allow_filesystem_mark = 0;
+ }
+#endif
+
+ return rc;
+}

38
SOURCES/fapolicyd-markfs-2.patch Normal file
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@ -0,0 +1,38 @@
From ca225c8e83b37e5f29703d7352af0b937b2e933c Mon Sep 17 00:00:00 2001
From: Steve Grubb <sgrubb@redhat.com>
Date: Tue, 27 Sep 2022 19:41:24 -0400
Subject: [PATCH] Correct the optional inclusion of code based on
HAVE_DECL_FAN_MARK_FILESYSTEM
---
ChangeLog | 1 +
src/daemon/notify.c | 2 +-
src/library/daemon-config.c | 2 +-
3 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/src/daemon/notify.c b/src/daemon/notify.c
index c91abc4..f36b644 100644
--- a/src/daemon/notify.c
+++ b/src/daemon/notify.c
@@ -124,7 +124,7 @@ int init_fanotify(const conf_t *conf, mlist *m)
while (path) {
retry_mark:
unsigned int flags = FAN_MARK_ADD;
-#ifdef HAVE_DECL_FAN_MARK_FILESYSTEM
+#if HAVE_DECL_FAN_MARK_FILESYSTEM != 0
if (conf->allow_filesystem_mark)
flags |= FAN_MARK_FILESYSTEM;
#else
diff --git a/src/library/daemon-config.c b/src/library/daemon-config.c
index 89b7f68..778b89a 100644
--- a/src/library/daemon-config.c
+++ b/src/library/daemon-config.c
@@ -618,7 +618,7 @@ static int fs_mark_parser(const struct nv_pair *nv, int line,
conf_t *config)
{
int rc = 0;
-#ifndef HAVE_DECL_FAN_MARK_FILESYSTEM
+#if HAVE_DECL_FAN_MARK_FILESYSTEM == 0
msg(LOG_WARNING,
"allow_filesystem_mark is unsupported on this kernel - ignoring");
#else

53
SOURCES/fapolicyd-markfs-3.patch Normal file
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@ -0,0 +1,53 @@
From cd315ebb45e3a095f612ec0e03f606a5383c39ba Mon Sep 17 00:00:00 2001
From: Steve Grubb <sgrubb@redhat.com>
Date: Wed, 28 Sep 2022 16:36:28 -0400
Subject: [PATCH] Add a check to see if they are defined before using them
---
src/daemon/notify.c | 2 +-
src/library/daemon-config.c | 14 ++++++++------
2 files changed, 9 insertions(+), 7 deletions(-)
diff --git a/src/daemon/notify.c b/src/daemon/notify.c
index f36b644..3986390 100644
--- a/src/daemon/notify.c
+++ b/src/daemon/notify.c
@@ -124,7 +124,7 @@ int init_fanotify(const conf_t *conf, mlist *m)
while (path) {
retry_mark:
unsigned int flags = FAN_MARK_ADD;
-#if HAVE_DECL_FAN_MARK_FILESYSTEM != 0
+#if defined HAVE_DECL_FAN_MARK_FILESYSTEM && HAVE_DECL_FAN_MARK_FILESYSTEM != 0
if (conf->allow_filesystem_mark)
flags |= FAN_MARK_FILESYSTEM;
#else
diff --git a/src/library/daemon-config.c b/src/library/daemon-config.c
index 778b89a..ba8ade0 100644
--- a/src/library/daemon-config.c
+++ b/src/library/daemon-config.c
@@ -618,17 +618,19 @@ static int fs_mark_parser(const struct nv_pair *nv, int line,
conf_t *config)
{
int rc = 0;
-#if HAVE_DECL_FAN_MARK_FILESYSTEM == 0
- msg(LOG_WARNING,
- "allow_filesystem_mark is unsupported on this kernel - ignoring");
-#else
- rc = unsigned_int_parser(&(config->allow_filesystem_mark), nv->value, line);
+#if defined HAVE_DECL_FAN_MARK_FILESYSTEM && HAVE_DECL_FAN_MARK_FILESYSTEM != 0
+ rc = unsigned_int_parser(&(config->allow_filesystem_mark),
+ nv->value, line);
if (rc == 0 && config->allow_filesystem_mark > 1) {
msg(LOG_WARNING,
- "allow_filesystem_mark value reset to 0 - line %d", line);
+ "allow_filesystem_mark value reset to 0 - line %d",
+ line);
config->allow_filesystem_mark = 0;
}
+#else
+ msg(LOG_WARNING,
+ "allow_filesystem_mark is unsupported on this kernel - ignoring");
#endif
return rc;

29
SOURCES/fapolicyd-markfs-4.patch Normal file
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@ -0,0 +1,29 @@
From 194ac1b87ba46ea9e26a865e8432e228cf8fefef Mon Sep 17 00:00:00 2001
From: Steven Brzozowski <stevenbrz8@gmail.com>
Date: Thu, 20 Oct 2022 17:55:30 -0400
Subject: [PATCH] Add `FAN_MARK_MOUNT` when opting out of `FAN_MARK_FILESYSTEM`
(#210)
Without `FAN_MARK_MOUNT`, fapolicyd will not receive events for any subdirectories specified by the path parameter.
---
src/daemon/notify.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/daemon/notify.c b/src/daemon/notify.c
index 586b6df..5e4f160 100644
--- a/src/daemon/notify.c
+++ b/src/daemon/notify.c
@@ -128,10 +128,13 @@ int init_fanotify(const conf_t *conf, mlist *m)
#if defined HAVE_DECL_FAN_MARK_FILESYSTEM && HAVE_DECL_FAN_MARK_FILESYSTEM != 0
if (conf->allow_filesystem_mark)
flags |= FAN_MARK_FILESYSTEM;
+ else
+ flags |= FAN_MARK_MOUNT;
#else
if (conf->allow_filesystem_mark)
msg(LOG_ERR,
"allow_filesystem_mark is unsupported for this kernel - ignoring");
+ flags |= FAN_MARK_MOUNT;
#endif
if (fanotify_mark(fd, flags, mask, -1, path) == -1) {
/*

0
SOURCES/fapolicyd-selinux.patch → SOURCES/fapolicyd-selinux-1.patch
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19
SOURCES/fapolicyd-selinux-2.patch Normal file
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@ -0,0 +1,19 @@
diff -up ./fapolicyd-selinux-0.4/fapolicyd.te.selinux2 ./fapolicyd-selinux-0.4/fapolicyd.te
--- ./fapolicyd-selinux-0.4/fapolicyd.te.selinux2 2022-11-11 10:46:51.016420807 +0100
+++ ./fapolicyd-selinux-0.4/fapolicyd.te 2022-11-11 10:47:25.161793205 +0100
@@ -39,10 +39,15 @@ allow fapolicyd_t self:unix_dgram_socket
gen_require(`
attribute file_type;
+ attribute filesystem_type;
+ attribute mountpoint;
')
allow fapolicyd_t file_type:dir { watch_mount watch_with_perm };
allow fapolicyd_t file_type:file { watch_mount watch_with_perm };
+allow fapolicyd_t filesystem_type : filesystem { watch };
+allow fapolicyd_t mountpoint : dir { watch_sb };
+
manage_files_pattern(fapolicyd_t, fapolicyd_log_t, fapolicyd_log_t)
logging_log_filetrans(fapolicyd_t, fapolicyd_log_t, file)

22
SOURCES/fapolicyd-static-app.patch Normal file
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@ -0,0 +1,22 @@
From 67c116d07ed4e73127392a2100a042882488585a Mon Sep 17 00:00:00 2001
From: Steve Grubb <sgrubb@redhat.com>
Date: Tue, 27 Sep 2022 10:32:28 -0400
Subject: [PATCH] Detect trusted static apps running programs by ld.so
---
ChangeLog | 1 +
src/library/event.c | 1 -
2 files changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/library/event.c b/src/library/event.c
index cbb4292..4d79eb9 100644
--- a/src/library/event.c
+++ b/src/library/event.c
@@ -149,7 +149,6 @@ int new_event(const struct fanotify_event_metadata *m, event_t *e)
skip_path = 1;
}
evict = 0;
- skip_path = 1;
subject_reset(s, EXE);
subject_reset(s, COMM);
subject_reset(s, EXE_TYPE);

32
SPECS/fapolicyd.spec
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@ -5,7 +5,7 @@
Summary: Application Whitelisting Daemon
Name: fapolicyd
Version: 1.1.3
Release: 102%{?dist}
Release: 102%{?dist}.7
License: GPLv3+
URL: http://people.redhat.com/sgrubb/fapolicyd
Source0: https://people.redhat.com/sgrubb/fapolicyd/%{name}-%{version}.tar.gz
@ -31,7 +31,7 @@ Requires(preun): systemd-units
Requires(postun): systemd-units
Patch1: fapolicyd-uthash-bundle.patch
Patch2: fapolicyd-selinux.patch
Patch2: fapolicyd-selinux-1.patch
Patch3: fagenrules-group.patch
Patch4: fapolicyd-fgets-update-thread.patch
Patch5: fapolicyd-openssl.patch
@ -40,6 +40,17 @@ Patch7: fapolicyd-cli-segfault.patch
Patch8: fapolicyd-sighup.patch
Patch9: fapolicyd-readme.patch
# 2137254 - statically linked app can execute untrusted app [rhel-9.1.0.z]
Patch10: fapolicyd-static-app.patch
# 2137263 - fapolicyd ineffective with systemd DynamicUser=yes [rhel-9.1.0.z]
Patch11: fapolicyd-markfs-1.patch
Patch12: fapolicyd-markfs-2.patch
Patch13: fapolicyd-markfs-3.patch
Patch14: fapolicyd-markfs-4.patch
Patch15: fapolicyd-selinux-2.patch
%description
Fapolicyd (File Access Policy Daemon) implements application whitelisting
to decide file access rights. Applications that are known via a reputation
@ -71,7 +82,7 @@ The %{name}-selinux package contains selinux policy for the %{name} daemon.
%patch1 -p1 -b .uthash
%endif
%patch2 -p1 -b .selinux
%patch2 -p1 -b .selinux1
%patch3 -p1 -b .group
%patch4 -p1 -b .update-thread
%patch5 -p1 -b .openssl
@ -80,6 +91,14 @@ The %{name}-selinux package contains selinux policy for the %{name} daemon.
%patch8 -p1 -b .sighup
%patch9 -p1 -b .readme
%patch10 -p1 -b .static
%patch11 -p1 -b .markfs1
%patch12 -p1 -b .markfs2
%patch13 -p1 -b .markfs3
%patch14 -p1 -b .markfs4
%patch15 -p1 -b .selinux2
# generate rules for python
sed -i "s|%python2_path%|`readlink -f %{__python2}`|g" rules.d/*.rules
sed -i "s|%python3_path%|`readlink -f %{__python3}`|g" rules.d/*.rules
@ -263,6 +282,13 @@ fi
%selinux_relabel_post -s %{selinuxtype}
%changelog
* Tue Oct 25 2022 Radovan Sroka <rsroka@redhat.com> - 1.1.3-102.7
RHEL 9.1.0.Z ERRATUM
- statically linked app can execute untrusted app
Resolves: rhbz#2137254
- fapolicyd ineffective with systemd DynamicUser=yes
Resolves: rhbz#2137263
* Fri Aug 05 2022 Radovan Sroka <rsroka@redhat.com> - 1.1.3-102
RHEL 9.1.0 ERRATUM
- rebase fapolicyd to the latest stable vesion