Authentication bypass in Apache Spark



Published: 2020-07-06
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-9480
CWE-ID CWE-287
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Apache Spark
Server applications / Frameworks for developing and running applications

Vendor Apache Foundation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper Authentication

EUVDB-ID: #VU29536

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 - Improper Authentication

Exploit availability: No

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


CPE2.3 External links

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

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.



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