[Buildroot] [git commit] package/openvmtools: fix CVE-2022-31676

[Thomas Petazzoni]

commit: https://git.buildroot.net/buildroot/commit/?id=b123e8887dc29eb2764162c048e8521a4072531a
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/master

Add a patch for CVE-2022-31676 (local privilege escalation
vulnerability).

Signed-off-by: Stefan Agner <stefan at agner.ch>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
---
 ...eck-authorization-on-incoming-guestOps-re.patch | 40 ++++++++++++++++++++++
 package/openvmtools/openvmtools.mk                 |  3 ++
 2 files changed, 43 insertions(+)

diff --git a/package/openvmtools/0013-Properly-check-authorization-on-incoming-guestOps-re.patch b/package/openvmtools/0013-Properly-check-authorization-on-incoming-guestOps-re.patch
new file mode 100644
index 0000000000..91e379b9a6
--- /dev/null
+++ b/package/openvmtools/0013-Properly-check-authorization-on-incoming-guestOps-re.patch
@@ -0,0 +1,40 @@
+From bb9f9ffbb151397545f921cee5b6a4933c6eea80 Mon Sep 17 00:00:00 2001
+Message-Id: <bb9f9ffbb151397545f921cee5b6a4933c6eea80.1666169374.git.stefan at agner.ch>
+From: John Wolfe <jwolfe at vmware.com>
+Date: Wed, 10 Aug 2022 06:12:02 -0700
+Subject: [PATCH] Properly check authorization on incoming guestOps requests
+
+Fix public pipe request checks.  Only a SessionRequest type should
+be accepted on the public pipe.
+
+Upstream: https://github.com/vmware/open-vm-tools/blob/CVE-2022-31676.patch/1205-Properly-check-authorization-on-incoming-guestOps-re.patch
+Signed-off-by: Stefan Agner <stefan at agner.ch>
+---
+ vgauth/serviceImpl/proto.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/vgauth/serviceImpl/proto.c b/vgauth/serviceImpl/proto.c
+index db7159ee..c4f85b02 100644
+--- a/vgauth/serviceImpl/proto.c
++++ b/vgauth/serviceImpl/proto.c
+@@ -1,5 +1,5 @@
+ /*********************************************************
+- * Copyright (C) 2011-2016,2019-2021 VMware, Inc. All rights reserved.
++ * Copyright (c) 2011-2016,2019-2022 VMware, Inc. All rights reserved.
+  *
+  * This program is free software; you can redistribute it and/or modify it
+  * under the terms of the GNU Lesser General Public License as published
+@@ -1201,6 +1201,10 @@ Proto_SecurityCheckRequest(ServiceConnection *conn,
+    VGAuthError err;
+    gboolean isSecure = ServiceNetworkIsConnectionPrivateSuperUser(conn);
+ 
++   if (conn->isPublic && req->reqType != PROTO_REQUEST_SESSION_REQ) {
++      return VGAUTH_E_PERMISSION_DENIED;
++   }
++
+    switch (req->reqType) {
+       /*
+        * This comes over the public connection; alwsys let it through.
+-- 
+2.38.0
+
diff --git a/package/openvmtools/openvmtools.mk b/package/openvmtools/openvmtools.mk
index d536e5e819..3106b9ecd6 100644
--- a/package/openvmtools/openvmtools.mk
+++ b/package/openvmtools/openvmtools.mk
@@ -13,6 +13,9 @@ OPENVMTOOLS_LICENSE_FILES = COPYING
 OPENVMTOOLS_CPE_ID_VENDOR = vmware
 OPENVMTOOLS_CPE_ID_PRODUCT = tools
 
+# 0013-Properly-check-authorization-on-incoming-guestOps-re.patch
+OPENVMTOOLS_IGNORE_CVES += CVE-2022-31676
+
 # configure.ac is patched
 OPENVMTOOLS_AUTORECONF = YES
 OPENVMTOOLS_CONF_OPTS = --with-dnet \