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Do not allow IDs with null bytes in decoded payloads

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Erik Johnson 2017-08-25 14:15:58 -05:00 • committed by Ch3LL
parent bd879eb66e
commit 70133aa305
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3 changed files with 25 additions and 0 deletions
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3
salt/crypt.py
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@ -607,6 +607,9 @@ class AsyncAuth(object):
raise tornado.gen.Return('retry')
else:
raise SaltClientError('Attempt to authenticate with the salt master failed with timeout error')
if not isinstance(payload, dict):
log.error('Sign-in attempt failed: %s', payload)
raise tornado.gen.Return(False)
if 'load' in payload:
if 'ret' in payload['load']:
if not payload['load']['ret']:

11
salt/transport/tcp.py
View file

@ -623,6 +623,17 @@ class TCPReqServerChannel(salt.transport.mixins.auth.AESReqServerMixin, salt.tra
'payload and load must be a dict', header=header))
raise tornado.gen.Return()
try:
id_ = payload['load'].get('id', '')
if '\0' in id_:
log.error('Payload contains an id with a null byte: %s', payload)
stream.send(self.serial.dumps('bad load: id contains a null byte'))
raise tornado.gen.Return()
except TypeError:
log.error('Payload contains non-string id: %s', payload)
stream.send(self.serial.dumps('bad load: id {0} is not a string'.format(id_)))
raise tornado.gen.Return()
# intercept the "_auth" commands, since the main daemon shouldn't know
# anything about our key auth
if payload['enc'] == 'clear' and payload.get('load', {}).get('cmd') == '_auth':

11
salt/transport/zeromq.py
View file

@ -596,6 +596,17 @@ class ZeroMQReqServerChannel(salt.transport.mixins.auth.AESReqServerMixin, salt.
stream.send(self.serial.dumps('payload and load must be a dict'))
raise tornado.gen.Return()
try:
id_ = payload['load'].get('id', '')
if '\0' in id_:
log.error('Payload contains an id with a null byte: %s', payload)
stream.send(self.serial.dumps('bad load: id contains a null byte'))
raise tornado.gen.Return()
except TypeError:
log.error('Payload contains non-string id: %s', payload)
stream.send(self.serial.dumps('bad load: id {0} is not a string'.format(id_)))
raise tornado.gen.Return()
# intercept the "_auth" commands, since the main daemon shouldn't know
# anything about our key auth
if payload['enc'] == 'clear' and payload.get('load', {}).get('cmd') == '_auth':