Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
Low
Attack Vector
Network
0

CVE-2018-11770

Disclosure Date: August 13, 2018
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

From version 1.3.0 onward, Apache Spark’s standalone master exposes a REST API for job submission, in addition to the submission mechanism used by spark-submit. In standalone, the config property ‘spark.authenticate.secret’ establishes a shared secret for authenticating requests to submit jobs via spark-submit. However, the REST API does not use this or any other authentication mechanism, and this is not adequately documented. In this case, a user would be able to run a driver program without authenticating, but not launch executors, using the REST API. This REST API is also used by Mesos, when set up to run in cluster mode (i.e., when also running MesosClusterDispatcher), for job submission. Future versions of Spark will improve documentation on these points, and prohibit setting ‘spark.authenticate.secret’ when running the REST APIs, to make this clear. Future versions will also disable the REST API by default in the standalone master by changing the default value of ‘spark.master.rest.enabled’ to ‘false’.

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CVSS V3 Severity and Metrics
Base Score:
4.2 Medium
Impact Score:
2.5
Exploitability Score:
1.6
Vector:
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack Vector (AV):
Network
Attack Complexity (AC):
High
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
Low
Integrity (I):
Low
Availability (A):
None

General Information

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Technical Analysis