Vulnerability identifier: #VU29536

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-9480

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache Spark
Server applications / Frameworks for developing and running applications

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests on Apache Spark master configured to require authentication (spark.authenticate) via a shared secret. A remote non-autenticated attacker can send a specially crafted RPC request without the shared key, bypass authentication process and start application resources on a Spark cluster.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache Spark: 2.4.0 - 2.4.5

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External links
http://spark.apache.org/security.html#CVE-2020-9480

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.