From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.proxmox.com (Postfix) with ESMTPS id 081F6B2B8 for ; Wed, 6 Apr 2022 13:58:43 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 78CB52A72E for ; Wed, 6 Apr 2022 13:58:12 +0200 (CEST) Received: from proxmox-new.maurer-it.com (proxmox-new.maurer-it.com [94.136.29.106]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by firstgate.proxmox.com (Proxmox) with ESMTPS id 841812A5BB for ; Wed, 6 Apr 2022 13:58:06 +0200 (CEST) Received: from proxmox-new.maurer-it.com (localhost.localdomain [127.0.0.1]) by proxmox-new.maurer-it.com (Proxmox) with ESMTP id 4EE98458F0 for ; Wed, 6 Apr 2022 13:58:06 +0200 (CEST) From: Oguz Bektas To: pve-devel@lists.proxmox.com Date: Wed, 6 Apr 2022 13:57:33 +0200 Message-Id: <20220406115734.898714-17-o.bektas@proxmox.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220406115734.898714-1-o.bektas@proxmox.com> References: <20220406115734.898714-1-o.bektas@proxmox.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SPAM-LEVEL: Spam detection results: 0 AWL 0.529 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record T_SCC_BODY_TEXT_LINE -0.01 - Subject: [pve-devel] [PATCH v3 storage 16/17] check_volume_access: allow superusers to pass arbitrary fs paths X-BeenThere: pve-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Apr 2022 11:58:43 -0000 Signed-off-by: Oguz Bektas --- v2->v3: * no changes PVE/Storage.pm | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/PVE/Storage.pm b/PVE/Storage.pm index 3b86956..32d90b7 100755 --- a/PVE/Storage.pm +++ b/PVE/Storage.pm @@ -475,6 +475,11 @@ sub parse_volume_id { sub check_volume_access { my ($rpcenv, $user, $cfg, $vmid, $volid, $type) = @_; + return if $user eq 'root@pam'; # always OK + + # SU on "/" path is needed for passing arbitrary filesystem paths + my $is_superuser = $rpcenv->check($user, "/", ['SuperUser'], 1); + my ($sid, $volname) = parse_volume_id($volid, 1); if ($sid) { my ($vtype, undef, $ownervm) = parse_volname($cfg, $volid); @@ -500,8 +505,8 @@ sub check_volume_access { die "missing privileges to access $volid\n"; } } else { - die "Only root can pass arbitrary filesystem paths." - if $user ne 'root@pam'; + die "Only superusers can pass arbitrary filesystem paths." + if !$is_superuser; } return undef; -- 2.30.2