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bh=S2ZZ7ZPJISnpZt1cwBtV7RhIp0sWJo7jom/X++Viyag=; b=DOvLRWOqX6wfneygX0pQDDLVqI4UxNUztbLNoOcxHin9eQoxAgdhx1xEGnizdkpR6oiL/9 dbENVG8PV2oA8RxVa/QKZQqTg0tHxafUYtUDWuyvKNTCtk3k1EUpgkucZDe0BslZFDKxq+ Hu3Gy3Q+wmojKn1EBYh4us1z9wxVCHU= X-MC-Unique: rBMWqbGVNFGQKktsmt72QQ-1 From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= To: qemu-devel@nongnu.org Cc: Markus Armbruster , Michael Roth , Konstantin Kostiuk , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= Subject: [PATCH 14/14] qga: mark guest-ssh-* / guest-*-password commands with 'unrestricted' flag Date: Tue, 4 Jun 2024 16:32:42 +0100 Message-ID: <20240604153242.251334-15-berrange@redhat.com> In-Reply-To: <20240604153242.251334-1-berrange@redhat.com> References: <20240604153242.251334-1-berrange@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.9 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1717515284190100019 This blocks use of all the 'guest-ssh-*' / 'guest-password' commands unless the QGA is runwith the --unrestricted command line argument. These commands allow the host admin to takeover user accounts and so directly compromise the guest OS. Signed-off-by: Daniel P. Berrang=C3=A9 --- qga/qapi-schema.json | 26 +++++++++++++++++++++++--- 1 file changed, 23 insertions(+), 3 deletions(-) diff --git a/qga/qapi-schema.json b/qga/qapi-schema.json index 25068b8110..e7ce80a479 100644 --- a/qga/qapi-schema.json +++ b/qga/qapi-schema.json @@ -1251,10 +1251,15 @@ # transmission, even if already crypt()d, to ensure it is 8-bit safe # when passed as JSON. # +# Features: +# +# @user-auth: not permitted if agent is limiting user auth +# # Since: 2.3 ## { 'command': 'guest-set-user-password', 'data': { 'username': 'str', 'password': 'str', 'crypted': 'bool' }, + 'features': [ 'user-auth' ], 'if': { 'any': [ 'CONFIG_WIN32', 'CONFIG_LINUX', 'CONFIG_FREEBSD'] } } =20 ## @@ -1810,11 +1815,16 @@ # # Returns: @GuestAuthorizedKeys # +# Features: +# +# @user-auth: not permitted if agent is limiting user auth +# # Since: 5.2 ## { 'command': 'guest-ssh-get-authorized-keys', 'data': { 'username': 'str' }, - 'returns': 'GuestAuthorizedKeys' + 'returns': 'GuestAuthorizedKeys', + 'features': [ 'user-auth' ] } =20 ## @@ -1830,10 +1840,15 @@ # # @reset: ignore the existing content, set it with the given keys only # +# Features: +# +# @user-auth: not permitted if agent is limiting user auth +# # Since: 5.2 ## { 'command': 'guest-ssh-add-authorized-keys', - 'data': { 'username': 'str', 'keys': ['str'], '*reset': 'bool' } + 'data': { 'username': 'str', 'keys': ['str'], '*reset': 'bool' }, + 'features': [ 'user-auth' ] } =20 ## @@ -1848,10 +1863,15 @@ # @keys: the public keys to remove (in OpenSSH/sshd(8) authorized_keys # format) # +# Features: +# +# @user-auth: not permitted if agent is limiting user auth +# # Since: 5.2 ## { 'command': 'guest-ssh-remove-authorized-keys', - 'data': { 'username': 'str', 'keys': ['str'] } + 'data': { 'username': 'str', 'keys': ['str'] }, + 'features': [ 'user-auth' ] } =20 ## --=20 2.45.1