CVE-2022-33891

CVE-2022-33891 is a high-severity (CVSS 8.8) vulnerability in Apache Spark. CISA added it to the Known Exploited Vulnerabilities catalog on March 7, 2023, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by March 28, 2023. CISA does not currently list it as used in ransomware campaigns. Apache has 41 vulnerabilities in the KEV catalog, 8 of them linked to ransomware.

The Apache Spark UI offers the possibility to enable ACLs via the configuration option spark.acls.enable. With an authentication filter, this checks whether a user has access permissions to view or modify the application. If ACLs are enabled, a code path in HttpSecurityFilter can allow someone to perform impersonation by providing an arbitrary user name. A malicious user might then be able to reach a permission check function that will ultimately build a Unix shell command based on their input, and execute it. This will result in arbitrary shell command execution as the user Spark is currently running as. This affects Apache Spark versions 3.0.3 and earlier, versions 3.1.1 to 3.1.2, and versions 3.2.0 to 3.2.1.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

• http://packetstormsecurity.com/files/168309/Apache-Spark-Unauthenticated-Command-Injection.html
• http://www.openwall.com/lists/oss-security/2023/05/02/1
• https://lists.apache.org/thread/p847l3kopoo5bjtmxrcwk21xp6tjxqlc
• http://packetstormsecurity.com/files/168309/Apache-Spark-Unauthenticated-Command-Injection.html
• http://www.openwall.com/lists/oss-security/2023/05/02/1
• https://lists.apache.org/thread/p847l3kopoo5bjtmxrcwk21xp6tjxqlc
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-33891