b123e8887d
Add a patch for CVE-2022-31676 (local privilege escalation vulnerability). Signed-off-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
41 lines
1.6 KiB
Diff
41 lines
1.6 KiB
Diff
From bb9f9ffbb151397545f921cee5b6a4933c6eea80 Mon Sep 17 00:00:00 2001
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Message-Id: <bb9f9ffbb151397545f921cee5b6a4933c6eea80.1666169374.git.stefan@agner.ch>
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From: John Wolfe <jwolfe@vmware.com>
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Date: Wed, 10 Aug 2022 06:12:02 -0700
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Subject: [PATCH] Properly check authorization on incoming guestOps requests
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Fix public pipe request checks. Only a SessionRequest type should
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be accepted on the public pipe.
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Upstream: https://github.com/vmware/open-vm-tools/blob/CVE-2022-31676.patch/1205-Properly-check-authorization-on-incoming-guestOps-re.patch
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Signed-off-by: Stefan Agner <stefan@agner.ch>
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---
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vgauth/serviceImpl/proto.c | 6 +++++-
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1 file changed, 5 insertions(+), 1 deletion(-)
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diff --git a/vgauth/serviceImpl/proto.c b/vgauth/serviceImpl/proto.c
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index db7159ee..c4f85b02 100644
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--- a/vgauth/serviceImpl/proto.c
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+++ b/vgauth/serviceImpl/proto.c
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@@ -1,5 +1,5 @@
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/*********************************************************
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- * Copyright (C) 2011-2016,2019-2021 VMware, Inc. All rights reserved.
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+ * Copyright (c) 2011-2016,2019-2022 VMware, Inc. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published
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@@ -1201,6 +1201,10 @@ Proto_SecurityCheckRequest(ServiceConnection *conn,
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VGAuthError err;
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gboolean isSecure = ServiceNetworkIsConnectionPrivateSuperUser(conn);
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+ if (conn->isPublic && req->reqType != PROTO_REQUEST_SESSION_REQ) {
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+ return VGAUTH_E_PERMISSION_DENIED;
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+ }
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+
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switch (req->reqType) {
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/*
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* This comes over the public connection; alwsys let it through.
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--
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2.38.0
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