CVE-2020-27216: Apache Beam
High severity, CVSS 7.0. EPSS: 4.4% chance of exploitation in the next 30 days.
In Eclipse Jetty versions 1.0 thru 9.4.32.v20200930, 10.0.0.alpha1 thru 10.0.0.beta2, and 11.0.0.alpha1 thru 11.0.0.beta2O, on Unix like systems, the system's temporary directory is shared between all users on that system. A collocated user can observe the process of creating a temporary sub directory in the shared temporary directory and race to complete the creation of the temporary subdirectory. If the attacker wins the race then they will have read and write permission to the subdirectory used to unpack web applications, including their WEB-INF/lib jar files and JSP files. If any code is ever executed out of this temporary directory, this can lead to a local privilege escalation vulnerability.
Affected products
- Apache Beam: version 2.21.0 only; version 2.22.0 only; version 2.23.0 only; version 2.24.0 only; version 2.25.0 only
- Debian Debian Linux: version 9.0 only; version 10.0 only
- Eclipse Jetty: from 1.0, before 9.3.29 (fixed in 9.3.29); from 9.4.0, up to and including 9.4.32; version 10.0.0 only; version 11.0.0 only
- Netapp Snap Creator Framework: affected versions not specified
- Netapp Snapcenter: affected versions not specified
- Netapp Storage Replication Adapter: from 7.2
- Netapp Vasa Provider: from 7.2
- Netapp Virtual Storage Console: from 7.2
- Oracle Communications Application Session Controller: version 3.9m0p2 only
- Oracle Communications Converged Application Server - Service Controller: version 6.2 only
- Oracle Communications Element Manager: from 8.2.1, up to and including 8.2.2.1
- Oracle Communications Offline Mediation Controller: version 12.0.0.3.0 only
- Oracle Communications Pricing Design Center: version 12.0.0.3.0 only
- Oracle Communications Services Gatekeeper: version 7.0 only
- Oracle Flexcube Core Banking: from 11.5.0, up to and including 11.9.0
- Oracle Flexcube Private Banking: version 12.0.0 only; version 12.1.0 only
- Oracle Jd Edwards Enterpriseone Tools: before 9.2.6.0 (fixed in 9.2.6.0)
- Oracle Siebel Core - Automation: up to and including 21.5
Published 2020-10-23. Last modified 2026-06-17.