There is a common misconception when writing AppArmor policy that
[0-9]* applies * to the [0-9] class, but that's not the case. For this
example, [0-9]* matches a single digit followed by any number of
characters except for /
Create a UUID variable that uses the following format 8-4-4-4-12.
Signed-off-by: Georgia Garcia <georgia.garcia@xxxxxxxxxxxxx>
---
src/security/apparmor/usr.lib.libvirt.virt-aa-helper.in | 5 ++++-
src/security/apparmor/usr.sbin.libvirtd.in | 7 +++++--
2 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/src/security/apparmor/usr.lib.libvirt.virt-aa-helper.in b/src/security/apparmor/usr.lib.libvirt.virt-aa-helper.in
index 44645c6989..90a8b7072c 100644
--- a/src/security/apparmor/usr.lib.libvirt.virt-aa-helper.in
+++ b/src/security/apparmor/usr.lib.libvirt.virt-aa-helper.in
@@ -1,5 +1,8 @@
#include <tunables/global>
+@{hextet}=[0-9a-f][0-9a-f][0-9a-f][0-9a-f]
+@{UUID}=@{hextet}@{hextet}-@{hextet}-@{hextet}-@{hextet}-@{hextet}@{hextet}@{hextet}
+
profile virt-aa-helper @libexecdir@/virt-aa-helper {
#include <abstractions/base>
#include <abstractions/openssl>
@@ -44,7 +47,7 @@ profile virt-aa-helper @libexecdir@/virt-aa-helper {
/{usr/,}{s,}bin/apparmor_parser Ux,
@sysconfdir@/apparmor.d/libvirt/* r,
- @sysconfdir@/apparmor.d/libvirt/libvirt-[0-9a-f]*-[0-9a-f]*-[0-9a-f]*-[0-9a-f]*-[0-9a-f]* rw,
+ @sysconfdir@/apparmor.d/libvirt/libvirt-@{UUID}* rw,
# for backingstore -- allow access to non-hidden files in @{HOME} as well
# as storage pools
diff --git a/src/security/apparmor/usr.sbin.libvirtd.in b/src/security/apparmor/usr.sbin.libvirtd.in
index 70e586895f..3659ddc219 100644
--- a/src/security/apparmor/usr.sbin.libvirtd.in
+++ b/src/security/apparmor/usr.sbin.libvirtd.in
@@ -1,4 +1,7 @@
#include <tunables/global>
+
+@{hextet}=[0-9a-f][0-9a-f][0-9a-f][0-9a-f]
+@{UUID}=@{hextet}@{hextet}-@{hextet}-@{hextet}-@{hextet}-@{hextet}@{hextet}@{hextet}
@{LIBVIRT}="libvirt"
profile libvirtd @sbindir@/libvirtd flags=(attach_disconnected) {
@@ -72,7 +75,7 @@ profile libvirtd @sbindir@/libvirtd flags=(attach_disconnected) {
signal (send) set=("term") peer=libvirtd//qemu_bridge_helper,
# allow connect with openGraphicsFD, direction reversed in newer versions
- unix (send, receive) type=stream addr=none peer=(label=libvirt-[0-9a-f]*-[0-9a-f]*-[0-9a-f]*-[0-9a-f]*-[0-9a-f]*),
+ unix (send, receive) type=stream addr=none peer=(label=libvirt-@{UUID}),
# unconfined also required if guests run without security module
unix (send, receive) type=stream addr=none peer=(label=unconfined),
@@ -115,7 +118,7 @@ profile libvirtd @sbindir@/libvirtd flags=(attach_disconnected) {
/etc/xen/scripts/** rmix,
# allow changing to our UUID-based named profiles
- change_profile -> @{LIBVIRT}-[0-9a-f]*-[0-9a-f]*-[0-9a-f]*-[0-9a-f]*-[0-9a-f]*,
+ change_profile -> @{LIBVIRT}-@{UUID},
/usr/{lib,lib64,lib/qemu,libexec,libexec/qemu}/qemu-bridge-helper Cx -> qemu_bridge_helper,
# child profile for bridge helper process
--
2.34.1
