CVE-2020-9480

Description

In Apache Spark 2.4.5 and earlier, a standalone resource manager's master may be configured to require authentication (spark.authenticate) via a shared secret. When enabled, however, a specially-crafted RPC to the master can succeed in starting an application's resources on the Spark cluster, even without the shared key. This can be leveraged to execute shell commands on the host machine. This does not affect Spark clusters using other resource managers (YARN, Mesos, etc).

How to fix CVE-2020-9480

To remediate CVE-2020-9480, upgrade the affected package to a fixed version below.

—upgrade to 2.4.6 or later
—upgrade to 2.4.6 or later
—upgrade to 2.4.6 or later
—upgrade to 2.4.6 or later

Is CVE-2020-9480 being exploited?

Likely — EPSS is 88.3%, placing CVE-2020-9480 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.

Affected packages (4)

from 0, < 2.4.6
from 0, < 2.4.6
from 0, < 2.4.6
from 0, < 2.4.6

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 4.0	—	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
osv	CVSS 3.1	CRITICAL9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H