open-vm-tools: Security fix CVE-2022-31676

CVE-2022-31676:
VMware Tools (12.0.0, 11.x.y and 10.x.y) contains a local privilege
escalation vulnerability. A malicious actor with local
non-administrative access to the Guest OS can escalate privileges as a
root user in the virtual machine.

Reference:
https://nvd.nist.gov/vuln/detail/CVE-2022-31676

Patch from:
https://github.com/vmware/open-vm-tools/commit/70a74758bfe0042c27f15ce590fb21a2bc54d745

Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

2 files changed, 44 insertions, 0 deletions

diff --git a/meta-networking/recipes-support/open-vm-tools/open-vm-tools/0001-Properly-check-authorization-on-incoming-guestOps-re.patch b/meta-networking/recipes-support/open-vm-tools/open-vm-tools/0001-Properly-check-authorization-on-incoming-guestOps-re.patch
new file mode 100644
index 0000000000..4140c46d07
--- /dev/null
+++ b/meta-networking/recipes-support/open-vm-tools/open-vm-tools/0001-Properly-check-authorization-on-incoming-guestOps-re.patch
@@ -0,0 +1,43 @@
+From 70a74758bfe0042c27f15ce590fb21a2bc54d745 Mon Sep 17 00:00:00 2001
+From: John Wolfe <jwolfe@vmware.com>
+Date: Sun, 21 Aug 2022 07:56:49 -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.
+
+CVE: CVE-2022-31676
+
+Upstream-Status: Backport
+[https://github.com/vmware/open-vm-tools/commit/70a74758bfe0042c27f15ce590fb21a2bc54d745]
+
+Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
+---
+ open-vm-tools/vgauth/serviceImpl/proto.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/open-vm-tools/vgauth/serviceImpl/proto.c b/open-vm-tools/vgauth/serviceImpl/proto.c
+index db7159ee..6c672601 100644
+--- a/open-vm-tools/vgauth/serviceImpl/proto.c
++++ b/open-vm-tools/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.
+-- 
+2.25.1
+
diff --git a/meta-networking/recipes-support/open-vm-tools/open-vm-tools_11.3.5.bb b/meta-networking/recipes-support/open-vm-tools/open-vm-tools_11.3.5.bb
index 1c3545f960..4670a85a67 100644
--- a/meta-networking/recipes-support/open-vm-tools/open-vm-tools_11.3.5.bb
+++ b/meta-networking/recipes-support/open-vm-tools/open-vm-tools_11.3.5.bb
@@ -44,6 +44,7 @@ SRC_URI = "git://github.com/vmware/open-vm-tools.git;protocol=https;branch=maste
            file://0001-Make-HgfsConvertFromNtTimeNsec-aware-of-64-bit-time_.patch;patchdir=.. \
            file://0002-hgfsServerLinux-Consider-64bit-time_t-possibility.patch;patchdir=.. \
            file://0001-open-vm-tools-Correct-include-path-for-poll.h.patch;patchdir=.. \
+           file://0001-Properly-check-authorization-on-incoming-guestOps-re.patch;patchdir=.. \
            "
 
 UPSTREAM_CHECK_GITTAGREGEX = "stable-(?P<pver>\d+(\.\d+)+)"