rpms
/
libsepol
2
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

libsepol-2.5-4 

- Build policy on systems not supporting DCCP protocol
- Fix extended permissions neverallow checking
- Fix CIL neverallow and bounds checking
- Android.mk: Add -D_GNU_SOURCE to common_cflags
This commit is contained in:
Petr Lautrbach 2016-04-29 11:48:17 +02:00
parent 6bf5b06538
commit 71b1a80d94
2 changed files with 394 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

394
libsepol-fedora.patch
View File

@ -1,8 +1,24 @@
diff --git libsepol-2.5/Android.mk libsepol-2.5/Android.mk
index a43b343..5d2c96b 100644
--- libsepol-2.5/Android.mk
+++ libsepol-2.5/Android.mk
@@ -64,6 +64,7 @@ cil_src_files := \
cil/src/cil_verify.c
common_cflags := \
+ -D_GNU_SOURCE \
-Wall -W -Wundef \
-Wshadow -Wmissing-noreturn \
-Wmissing-format-attribute
diff --git libsepol-2.5/ChangeLog libsepol-2.5/ChangeLog
index ace3d54..41bf8c0 100644
index ace3d54..9348d70 100644
--- libsepol-2.5/ChangeLog
+++ libsepol-2.5/ChangeLog
@@ -1,3 +1,6 @@
@@ -1,3 +1,10 @@
+ * Build policy on systems not supporting DCCP protocol, from Richard Haines.
+ * Fix extended permissions neverallow checking, from Jeff Vander Stoep.
+ * Fix CIL neverallow and bounds checking, from James Carter
+ * Android.mk: Add -D_GNU_SOURCE to common_cflags, from Nick Kralevich.
+ * Add support for portcon dccp protocol, from Richard Haines
+ * Fix bug in CIL when resetting classes, from Steve Lawrence
+
@ -22,10 +38,20 @@ index afdc240..de7033a 100644
CIL_KEY_TUNABLEIF = cil_strpool_add("tunableif");
CIL_KEY_ALLOW = cil_strpool_add("allow");
diff --git libsepol-2.5/cil/src/cil_binary.c libsepol-2.5/cil/src/cil_binary.c
index f749e53..5d7e52e 100644
index f749e53..b8437c9 100644
--- libsepol-2.5/cil/src/cil_binary.c
+++ libsepol-2.5/cil/src/cil_binary.c
@@ -3035,6 +3035,9 @@ int cil_portcon_to_policydb(policydb_t *pdb, struct cil_sort *portcons)
@@ -31,6 +31,9 @@
#include <stdio.h>
#include <assert.h>
#include <netinet/in.h>
+#ifndef IPPROTO_DCCP
+#define IPPROTO_DCCP 33
+#endif
#include <sepol/policydb/policydb.h>
#include <sepol/policydb/polcaps.h>
@@ -3035,6 +3038,9 @@ int cil_portcon_to_policydb(policydb_t *pdb, struct cil_sort *portcons)
case CIL_PROTOCOL_TCP:
new_ocon->u.port.protocol = IPPROTO_TCP;
break;
@ -35,6 +61,183 @@ index f749e53..5d7e52e 100644
default:
/* should not get here */
rc = SEPOL_ERR;
@@ -4380,10 +4386,9 @@ exit:
return rc;
}
-static int cil_check_neverallow(const struct cil_db *db, policydb_t *pdb, struct cil_tree_node *node)
+static int cil_check_neverallow(const struct cil_db *db, policydb_t *pdb, struct cil_tree_node *node, int *violation)
{
- int rc = SEPOL_ERR;
- int ret = CIL_FALSE;
+ int rc = SEPOL_OK;
struct cil_avrule *cil_rule = node->data;
struct cil_symtab_datum *tgt = cil_rule->tgt;
uint32_t kind;
@@ -4422,11 +4427,11 @@ static int cil_check_neverallow(const struct cil_db *db, policydb_t *pdb, struct
rc = check_assertion(pdb, rule);
if (rc == CIL_TRUE) {
+ *violation = CIL_TRUE;
rc = __cil_print_neverallow_failure(db, node);
if (rc != SEPOL_OK) {
goto exit;
}
- ret = CIL_TRUE;
}
} else {
@@ -4444,12 +4449,11 @@ static int cil_check_neverallow(const struct cil_db *db, policydb_t *pdb, struct
rule->xperms = item->data;
rc = check_assertion(pdb, rule);
if (rc == CIL_TRUE) {
+ *violation = CIL_TRUE;
rc = __cil_print_neverallow_failure(db, node);
if (rc != SEPOL_OK) {
goto exit;
}
- ret = CIL_TRUE;
- goto exit;
}
}
}
@@ -4466,34 +4470,23 @@ exit:
rule->xperms = NULL;
__cil_destroy_sepol_avrules(rule);
- if (rc) {
- return rc;
- } else {
- return ret;
- }
+ return rc;
}
-static int cil_check_neverallows(const struct cil_db *db, policydb_t *pdb, struct cil_list *neverallows)
+static int cil_check_neverallows(const struct cil_db *db, policydb_t *pdb, struct cil_list *neverallows, int *violation)
{
int rc = SEPOL_OK;
- int ret = CIL_FALSE;
struct cil_list_item *item;
cil_list_for_each(item, neverallows) {
- rc = cil_check_neverallow(db, pdb, item->data);
- if (rc < 0) {
+ rc = cil_check_neverallow(db, pdb, item->data, violation);
+ if (rc != SEPOL_OK) {
goto exit;
- } else if (rc > 0) {
- ret = CIL_TRUE;
}
}
exit:
- if (rc || ret) {
- return SEPOL_ERR;
- } else {
- return SEPOL_OK;
- }
+ return rc;
}
static struct cil_list *cil_classperms_from_sepol(policydb_t *pdb, uint16_t class, uint32_t data, struct cil_class *class_value_to_cil[], struct cil_perm **perm_value_to_cil[])
@@ -4548,7 +4541,7 @@ exit:
return rc;
}
-static int cil_check_type_bounds(const struct cil_db *db, policydb_t *pdb, void *type_value_to_cil, struct cil_class *class_value_to_cil[], struct cil_perm **perm_value_to_cil[])
+static int cil_check_type_bounds(const struct cil_db *db, policydb_t *pdb, void *type_value_to_cil, struct cil_class *class_value_to_cil[], struct cil_perm **perm_value_to_cil[], int *violation)
{
int rc = SEPOL_OK;
int i;
@@ -4574,6 +4567,9 @@ static int cil_check_type_bounds(const struct cil_db *db, policydb_t *pdb, void
if (bad) {
avtab_ptr_t cur;
struct cil_avrule target;
+ struct cil_tree_node *n1 = NULL;
+
+ *violation = CIL_TRUE;
target.is_extended = 0;
target.rule_kind = CIL_AVRULE_ALLOWED;
@@ -4585,7 +4581,6 @@ static int cil_check_type_bounds(const struct cil_db *db, policydb_t *pdb, void
for (cur = bad; cur; cur = cur->next) {
struct cil_list_item *i2;
struct cil_list *matching;
- struct cil_tree_node *n;
rc = cil_avrule_from_sepol(pdb, cur, &target, type_value_to_cil, class_value_to_cil, perm_value_to_cil);
if (rc != SEPOL_OK) {
@@ -4594,7 +4589,7 @@ static int cil_check_type_bounds(const struct cil_db *db, policydb_t *pdb, void
}
__cil_print_rule(" ", "allow", &target);
cil_list_init(&matching, CIL_NODE);
- rc = cil_find_matching_avrule_in_ast(db->ast->root, CIL_AVRULE, &target, matching, CIL_FALSE);
+ rc = cil_find_matching_avrule_in_ast(db->ast->root, CIL_AVRULE, &target, matching, CIL_TRUE);
if (rc) {
cil_log(CIL_ERR, "Error occurred while checking type bounds\n");
cil_list_destroy(&matching, CIL_FALSE);
@@ -4602,14 +4597,17 @@ static int cil_check_type_bounds(const struct cil_db *db, policydb_t *pdb, void
bounds_destroy_bad(bad);
goto exit;
}
-
cil_list_for_each(i2, matching) {
- __cil_print_parents(" ", (struct cil_tree_node *)i2->data);
+ struct cil_tree_node *n2 = i2->data;
+ struct cil_avrule *r2 = n2->data;
+ if (n1 == n2) {
+ cil_log(CIL_ERR, " <See previous>\n");
+ } else {
+ n1 = n2;
+ __cil_print_parents(" ", n2);
+ __cil_print_rule(" ", "allow", r2);
+ }
}
- i2 = matching->tail;
- n = i2->data;
- __cil_print_rule(" ", "allow", n->data);
- cil_log(CIL_ERR,"\n");
cil_list_destroy(&matching, CIL_FALSE);
cil_list_destroy(&target.perms.classperms, CIL_TRUE);
}
@@ -4753,20 +4751,32 @@ int cil_binary_create_allocated_pdb(const struct cil_db *db, sepol_policydb_t *p
__cil_set_conditional_state_and_flags(pdb);
if (db->disable_neverallow != CIL_TRUE) {
+ int violation = CIL_FALSE;
cil_log(CIL_INFO, "Checking Neverallows\n");
- rc = cil_check_neverallows(db, pdb, neverallows);
+ rc = cil_check_neverallows(db, pdb, neverallows, &violation);
if (rc != SEPOL_OK) goto exit;
cil_log(CIL_INFO, "Checking User Bounds\n");
- bounds_check_users(NULL, pdb);
+ rc = bounds_check_users(NULL, pdb);
+ if (rc) {
+ violation = CIL_TRUE;
+ }
cil_log(CIL_INFO, "Checking Role Bounds\n");
- bounds_check_roles(NULL, pdb);
+ rc = bounds_check_roles(NULL, pdb);
+ if (rc) {
+ violation = CIL_TRUE;
+ }
cil_log(CIL_INFO, "Checking Type Bounds\n");
- rc = cil_check_type_bounds(db, pdb, type_value_to_cil, class_value_to_cil, perm_value_to_cil);
+ rc = cil_check_type_bounds(db, pdb, type_value_to_cil, class_value_to_cil, perm_value_to_cil, &violation);
if (rc != SEPOL_OK) goto exit;
+ if (violation == CIL_TRUE) {
+ rc = SEPOL_ERR;
+ goto exit;
+ }
+
}
rc = SEPOL_OK;
diff --git libsepol-2.5/cil/src/cil_build_ast.c libsepol-2.5/cil/src/cil_build_ast.c
index 1135e06..90fee8e 100644
--- libsepol-2.5/cil/src/cil_build_ast.c
@ -48,6 +251,23 @@ index 1135e06..90fee8e 100644
} else {
cil_log(CIL_ERR, "Invalid protocol\n");
rc = SEPOL_ERR;
diff --git libsepol-2.5/cil/src/cil_find.c libsepol-2.5/cil/src/cil_find.c
index 75de886..8e0688c 100644
--- libsepol-2.5/cil/src/cil_find.c
+++ libsepol-2.5/cil/src/cil_find.c
@@ -69,7 +69,11 @@ static int cil_type_match_any(struct cil_symtab_datum *d1, struct cil_symtab_dat
/* Both are attributes */
struct cil_typeattribute *a1 = (struct cil_typeattribute *)d1;
struct cil_typeattribute *a2 = (struct cil_typeattribute *)d2;
- return ebitmap_match_any(a1->types, a2->types);
+ if (d1 == d2) {
+ return CIL_TRUE;
+ } else if (ebitmap_match_any(a1->types, a2->types)) {
+ return CIL_TRUE;
+ }
}
return CIL_FALSE;
}
diff --git libsepol-2.5/cil/src/cil_internal.h libsepol-2.5/cil/src/cil_internal.h
index a0a5480..a75ddf8 100644
--- libsepol-2.5/cil/src/cil_internal.h
@ -121,11 +341,159 @@ index 697cea4..c07d1fa 100644
/* Key */
extern int sepol_port_compare(const sepol_port_t * port,
diff --git libsepol-2.5/src/assertion.c libsepol-2.5/src/assertion.c
index fbf397f..f4429ad 100644
--- libsepol-2.5/src/assertion.c
+++ libsepol-2.5/src/assertion.c
@@ -147,36 +147,49 @@ static int report_assertion_extended_permissions(sepol_handle_t *handle,
avtab_key_t tmp_key;
avtab_extended_perms_t *xperms;
avtab_extended_perms_t error;
+ ebitmap_t *sattr = &p->type_attr_map[k->source_type - 1];
+ ebitmap_t *tattr = &p->type_attr_map[k->target_type - 1];
+ ebitmap_node_t *snode, *tnode;
+ unsigned int i, j;
int rc = 1;
int ret = 0;
memcpy(&tmp_key, k, sizeof(avtab_key_t));
tmp_key.specified = AVTAB_XPERMS_ALLOWED;
- for (node = avtab_search_node(avtab, &tmp_key);
- node;
- node = avtab_search_node_next(node, tmp_key.specified)) {
- xperms = node->datum.xperms;
- if ((xperms->specified != AVTAB_XPERMS_IOCTLFUNCTION)
- && (xperms->specified != AVTAB_XPERMS_IOCTLDRIVER))
+ ebitmap_for_each_bit(sattr, snode, i) {
+ if (!ebitmap_node_get_bit(snode, i))
continue;
+ ebitmap_for_each_bit(tattr, tnode, j) {
+ if (!ebitmap_node_get_bit(tnode, j))
+ continue;
+ tmp_key.source_type = i + 1;
+ tmp_key.target_type = j + 1;
+ for (node = avtab_search_node(avtab, &tmp_key);
+ node;
+ node = avtab_search_node_next(node, tmp_key.specified)) {
+ xperms = node->datum.xperms;
+ if ((xperms->specified != AVTAB_XPERMS_IOCTLFUNCTION)
+ && (xperms->specified != AVTAB_XPERMS_IOCTLDRIVER))
+ continue;
- rc = check_extended_permissions(avrule->xperms, xperms);
- /* failure on the extended permission check_extended_permissionss */
- if (rc) {
- extended_permissions_violated(&error, avrule->xperms, xperms);
- ERR(handle, "neverallowxperm on line %lu of %s (or line %lu of policy.conf) violated by\n"
- "allowxperm %s %s:%s %s;",
- avrule->source_line, avrule->source_filename, avrule->line,
- p->p_type_val_to_name[stype],
- p->p_type_val_to_name[ttype],
- p->p_class_val_to_name[curperm->tclass - 1],
- sepol_extended_perms_to_string(&error));
-
- rc = 0;
- ret++;
+ rc = check_extended_permissions(avrule->xperms, xperms);
+ /* failure on the extended permission check_extended_permissionss */
+ if (rc) {
+ extended_permissions_violated(&error, avrule->xperms, xperms);
+ ERR(handle, "neverallowxperm on line %lu of %s (or line %lu of policy.conf) violated by\n"
+ "allowxperm %s %s:%s %s;",
+ avrule->source_line, avrule->source_filename, avrule->line,
+ p->p_type_val_to_name[stype],
+ p->p_type_val_to_name[ttype],
+ p->p_class_val_to_name[curperm->tclass - 1],
+ sepol_extended_perms_to_string(&error));
+
+ rc = 0;
+ ret++;
+ }
+ }
}
-
}
/* failure on the regular permissions */
@@ -319,28 +332,42 @@ oom:
* granted
*/
static int check_assertion_extended_permissions(avrule_t *avrule, avtab_t *avtab,
- avtab_key_t *k)
+ avtab_key_t *k, policydb_t *p)
{
avtab_ptr_t node;
avtab_key_t tmp_key;
avtab_extended_perms_t *xperms;
av_extended_perms_t *neverallow_xperms = avrule->xperms;
+ ebitmap_t *sattr = &p->type_attr_map[k->source_type - 1];
+ ebitmap_t *tattr = &p->type_attr_map[k->target_type - 1];
+ ebitmap_node_t *snode, *tnode;
+ unsigned int i, j;
int rc = 1;
memcpy(&tmp_key, k, sizeof(avtab_key_t));
tmp_key.specified = AVTAB_XPERMS_ALLOWED;
- for (node = avtab_search_node(avtab, &tmp_key);
- node;
- node = avtab_search_node_next(node, tmp_key.specified)) {
- xperms = node->datum.xperms;
- if ((xperms->specified != AVTAB_XPERMS_IOCTLFUNCTION)
- && (xperms->specified != AVTAB_XPERMS_IOCTLDRIVER))
+ ebitmap_for_each_bit(sattr, snode, i) {
+ if (!ebitmap_node_get_bit(snode, i))
continue;
-
- rc = check_extended_permissions(neverallow_xperms, xperms);
- if (rc)
- break;
+ ebitmap_for_each_bit(tattr, tnode, j) {
+ if (!ebitmap_node_get_bit(tnode, j))
+ continue;
+ tmp_key.source_type = i + 1;
+ tmp_key.target_type = j + 1;
+ for (node = avtab_search_node(avtab, &tmp_key);
+ node;
+ node = avtab_search_node_next(node, tmp_key.specified)) {
+ xperms = node->datum.xperms;
+
+ if ((xperms->specified != AVTAB_XPERMS_IOCTLFUNCTION)
+ && (xperms->specified != AVTAB_XPERMS_IOCTLDRIVER))
+ continue;
+ rc = check_extended_permissions(neverallow_xperms, xperms);
+ if (rc)
+ break;
+ }
+ }
}
return rc;
@@ -386,7 +413,7 @@ static int check_assertion_avtab_match(avtab_key_t *k, avtab_datum_t *d, void *a
goto exit;
if (avrule->specified == AVRULE_XPERMS_NEVERALLOW) {
- rc = check_assertion_extended_permissions(avrule, avtab, k);
+ rc = check_assertion_extended_permissions(avrule, avtab, k, p);
if (rc == 0)
goto exit;
}
diff --git libsepol-2.5/src/module_to_cil.c libsepol-2.5/src/module_to_cil.c
index 18ec6b9..b478d9f 100644
index 18ec6b9..38f0dc3 100644
--- libsepol-2.5/src/module_to_cil.c
+++ libsepol-2.5/src/module_to_cil.c
@@ -2537,6 +2537,7 @@ static int ocontext_selinux_port_to_cil(struct policydb *pdb, struct ocontext *p
@@ -26,6 +26,9 @@
#include <getopt.h>
#include <libgen.h>
#include <netinet/in.h>
+#ifndef IPPROTO_DCCP
+#define IPPROTO_DCCP 33
+#endif
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
@@ -2537,6 +2540,7 @@ static int ocontext_selinux_port_to_cil(struct policydb *pdb, struct ocontext *p
switch (portcon->u.port.protocol) {
case IPPROTO_TCP: protocol = "tcp"; break;
case IPPROTO_UDP: protocol = "udp"; break;
@ -147,10 +515,18 @@ index 6a33d93..ed9093b 100644
return "???";
}
diff --git libsepol-2.5/src/ports.c libsepol-2.5/src/ports.c
index 607a629..b1ee094 100644
index 607a629..62ec602 100644
--- libsepol-2.5/src/ports.c
+++ libsepol-2.5/src/ports.c
@@ -16,6 +16,8 @@ static inline int sepol2ipproto(sepol_handle_t * handle, int proto)
@@ -1,4 +1,7 @@
#include <netinet/in.h>
+#ifndef IPPROTO_DCCP
+#define IPPROTO_DCCP 33
+#endif
#include <stdlib.h>
#include "debug.h"
@@ -16,6 +19,8 @@ static inline int sepol2ipproto(sepol_handle_t * handle, int proto)
return IPPROTO_TCP;
case SEPOL_PROTO_UDP:
return IPPROTO_UDP;
@ -159,7 +535,7 @@ index 607a629..b1ee094 100644
default:
ERR(handle, "unsupported protocol %u", proto);
return STATUS_ERR;
@@ -30,6 +32,8 @@ static inline int ipproto2sepol(sepol_handle_t * handle, int proto)
@@ -30,6 +35,8 @@ static inline int ipproto2sepol(sepol_handle_t * handle, int proto)
return SEPOL_PROTO_TCP;
case IPPROTO_UDP:
return SEPOL_PROTO_UDP;

12
libsepol.spec
View File

@ -1,15 +1,15 @@
Summary: SELinux binary policy manipulation library
Name: libsepol
Version: 2.5
Release: 3%{?dist}
Release: 4%{?dist}
License: LGPLv2+
Group: System Environment/Libraries
Source: https://raw.githubusercontent.com/wiki/SELinuxProject/selinux/files/releases/20160223/libsepol-2.5.tar.gz
# download https://raw.githubusercontent.com/fedora-selinux/scripts/master/selinux/make-fedora-selinux-patch.sh
# run:
# $ VERSION=2.5 ./make-fedora-selinux-patch.sh libsepol
# HEAD https://github.com/fedora-selinux/selinux/commit/4bfb84c7ff7b33cf06b9a6b2317d24054b9db562
# Patch1: libsepol-fedora.patch
# HEAD https://github.com/fedora-selinux/selinux/commit/f900ff37022119de47d516f103ccfd339d52c861
Patch1: libsepol-fedora.patch
URL: https://github.com/SELinuxProject/selinux/wiki
BuildRequires: flex
@ -106,6 +106,12 @@ exit 0
%{_libdir}/libsepol.so.1
%changelog
* Fri Apr 29 2016 Petr Lautrbach <plautrba@redhat.com> - 2.5-4
- Build policy on systems not supporting DCCP protocol
- Fix extended permissions neverallow checking
- Fix CIL neverallow and bounds checking
- Android.mk: Add -D_GNU_SOURCE to common_cflags
* Fri Apr 08 2016 Petr Lautrbach <plautrba@redhat.com> - 2.5-3
- Fix bug in CIL when resetting classes
- Add support for portcon dccp protocol