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From: Lorenz Stechauner <l.stechauner@proxmox.com>
To: pve-devel@lists.proxmox.com
Date: Mon, 19 Apr 2021 09:16:28 +0200
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Subject: [pve-devel] [PATCH v2 pve-access-control] fix #1500: permission
path syntax check for access control
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Syntax for permission paths is now checked on API calls for
creation or update on permissions.
Signed-off-by: Lorenz Stechauner <l.stechauner@proxmox.com>
---
Regex is now hardcoded,
removed get_permission_paths,
check_path does not call normalize_path anymore,
indentation fix
PVE/API2/ACL.pm | 4 ++++
PVE/AccessControl.pm | 18 ++++++++++++++++++
2 files changed, 22 insertions(+)
diff --git a/PVE/API2/ACL.pm b/PVE/API2/ACL.pm
index c340267..857c672 100644
--- a/PVE/API2/ACL.pm
+++ b/PVE/API2/ACL.pm
@@ -141,6 +141,10 @@ __PACKAGE__->register_method ({
my $path = PVE::AccessControl::normalize_path($param->{path});
raise_param_exc({ path => "invalid ACL path '$param->{path}'" }) if !$path;
+ if (!$param->{delete} && !PVE::AccessControl::check_path($path)) {
+ raise_param_exc({ path => "invalid ACL path '$param->{path}'" });
+ }
+
PVE::AccessControl::lock_user_config(
sub {
diff --git a/PVE/AccessControl.pm b/PVE/AccessControl.pm
index 8b5be1e..4ef1080 100644
--- a/PVE/AccessControl.pm
+++ b/PVE/AccessControl.pm
@@ -929,6 +929,24 @@ sub normalize_path {
return $path;
}
+sub check_path {
+ return shift =~ m!^(
+ /
+ |/access
+ |/access/groups
+ |/access/realm
+ |/nodes
+ |/nodes/[[:alnum:]\.\-\_]+
+ |/pool
+ |/pool/[[:alnum:]\.\-\_]+
+ |/sdn
+ |/storage
+ |/storage/[[:alnum:]\.\-\_]+
+ |/vms
+ |/vms/\d{3,}
+ )$!xs;
+}
+
PVE::JSONSchema::register_format('pve-groupid', \&verify_groupname);
sub verify_groupname {
my ($groupname, $noerr) = @_;
--
2.20.1