From: Fiona Ebner <f.ebner@proxmox.com>
To: pve-devel@lists.proxmox.com
Subject: [pve-devel] [PATCH qemu-server v4 18/27] backup restore: external: hardening check for untrusted source image
Date: Thu, 14 Nov 2024 16:07:45 +0100 [thread overview]
Message-ID: <20241114150754.374376-19-f.ebner@proxmox.com> (raw)
In-Reply-To: <20241114150754.374376-1-f.ebner@proxmox.com>
Suggested-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
---
No changes in v4.
NOTE: actual checking being done depends on Fabian's hardening patches:
https://lore.proxmox.com/pve-devel/20241104104221.228730-1-f.gruenbichler@proxmox.com/
PVE/QemuServer.pm | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index 8beb8940..3f0e06a7 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -7388,6 +7388,12 @@ sub restore_external_archive {
$backup_provider->restore_vm_volume_init($volname, $storeid, $d->{devname}, {});
my $source_path = $info->{'qemu-img-path'}
or die "did not get source image path from backup provider\n";
+
+ print "importing drive '$d->{devname}' from '$source_path'\n";
+
+ # safety check for untrusted source image
+ PVE::Storage::file_size_info($source_path, undef, 1);
+
eval {
qemu_img_convert(
$source_path, $d->{volid}, $d->{size}, undef, 0, $options->{bwlimit});
--
2.39.5
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next prev parent reply other threads:[~2024-11-14 15:08 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-14 15:07 [pve-devel] [PATCH-SERIES qemu/common/storage/qemu-server/container/manager v4 00/27] backup provider API Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [PATCH qemu v4 01/27] PVE backup: add target ID in backup state Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [PATCH qemu v4 02/27] PVE backup: get device info: allow caller to specify filter for which devices use fleecing Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [PATCH qemu v4 03/27] PVE backup: implement backup access setup and teardown API for external providers Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [PATCH qemu v4 04/27] PVE backup: implement bitmap support for external backup access Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [PATCH common v4 05/27] test: lock file: get rid of END block that made test always pass Fiona Ebner
2024-11-14 19:46 ` [pve-devel] applied: " Thomas Lamprecht
2024-11-14 15:07 ` [pve-devel] [PATCH common v4 06/27] tools: run fork: allow running code in parent after fork Fiona Ebner
2024-11-14 19:46 ` [pve-devel] applied: " Thomas Lamprecht
2024-11-14 15:07 ` [pve-devel] [PATCH common v4 07/27] test: have lock file test use run_fork() helper Fiona Ebner
2024-11-14 19:46 ` [pve-devel] applied: " Thomas Lamprecht
2024-11-14 15:07 ` [pve-devel] [PATCH storage v4 08/27] add storage_has_feature() helper function Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [PATCH storage v4 09/27] plugin: introduce new_backup_provider() method Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [PATCH storage v4 10/27] extract backup config: delegate to backup provider for storages that support it Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [POC storage v4 11/27] add backup provider example Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [POC storage v4 12/27] WIP Borg plugin Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [PATCH qemu-server v4 13/27] backup: keep track of block-node size for fleecing Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [PATCH qemu-server v4 14/27] module config: load nbd module at boot Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [PATCH qemu-server v4 15/27] backup: allow adding fleecing images also for EFI and TPM Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [PATCH qemu-server v4 16/27] backup: implement backup for external providers Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [PATCH qemu-server v4 17/27] backup: implement restore " Fiona Ebner
2024-11-14 15:07 ` Fiona Ebner [this message]
2024-11-14 15:07 ` [pve-devel] [PATCH container v4 19/27] add LXC::Namespaces module Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [PATCH container v4 20/27] backup: implement backup for external providers Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [PATCH container v4 21/27] backup: implement restore " Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [PATCH container v4 22/27] external restore: don't use 'one-file-system' tar flag when restoring from a directory Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [PATCH container v4 23/27] create: factor out compression option helper Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [PATCH container v4 24/27] restore tar archive: check potentially untrusted archive Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [PATCH container v4 25/27] api: add early check against restoring privileged container from external source Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [PATCH manager v4 26/27] ui: backup: also check for backup subtype to classify archive Fiona Ebner
2024-11-14 15:07 ` [pve-devel] [PATCH manager v4 27/27] backup: implement backup for external providers Fiona Ebner
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