Main Vulnerability Database Vulnerabilities #VU29536

Improper Authentication in Apache Spark - CVE-2020-9480

Published: July 6, 2020 / Updated: July 26, 2024

Vulnerability identifier: #VU29536

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-9480

CWE-ID: CWE-287

Exploitation vector: Remote access

Exploit availability: Public exploit is available

Vulnerability details

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.

Affected software

Apache Spark
Oracle Business Intelligence Enterprise Edition

How to mitigate CVE-2020-9480

Install updates from vendor's website.

Apache Spark - update to 2.4.6

Links to Public Exploits and PoC-codes

Exploit #10257 - CVE-2020-9480 () (July 26, 2024)

External References

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