Authentication bypass in Apache Spark



| Updated: 2024-07-26
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-9480
CWE-ID CWE-287
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 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

CVSSv4.0: 5.5 [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/E:P/U:Green]

CVE-ID: CVE-2020-9480

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: Yes

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

https://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. However, proof of concept for this vulnerability is available.



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