CVSS 3.1
7.0 highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2020-27216
High (7.0). EPSS 4.4% chance of exploitation in the next 30 days. Fixed in org.eclipse.jetty:jetty-webapp 10.0.0.beta3, 11.0.0.beta3, 9.4.33.v20201020.
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.
Severity
- EPSS
- 4.4% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-378, CWE-379
- Published
- Modified
- Record from
- the NVD, synced
Affected
- apache:beam
- debian:debian_linux
- eclipse:jetty
- netapp:snap_creator_framework
- netapp:snapcenter
- netapp:storage_replication_adapter
- netapp:vasa_provider
- netapp:virtual_storage_console
- oracle:communications_application_session_controller
- oracle:communications_converged_application_server_-_service_controller
- oracle:communications_element_manager
- oracle:communications_offline_mediation_controller
- oracle:communications_pricing_design_center
- oracle:communications_services_gatekeeper
- oracle:flexcube_core_banking
- oracle:flexcube_private_banking
- oracle:jd_edwards_enterpriseone_tools
- oracle:siebel_core_-_automation
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-g3wg-6mcf-8jj6 | Maven | org.eclipse.jetty:jetty-webapp | <9.4.33.v20201020 | 9.4.33.v20201020 |
| GHSA-g3wg-6mcf-8jj6 | Maven | org.mortbay.jetty:jetty-webapp | <9.4.33 | 9.4.33 |
| GHSA-g3wg-6mcf-8jj6 | Maven | org.eclipse.jetty:jetty-webapp | >=10.0.0.beta1 <10.0.0.beta3 | 10.0.0.beta3 |
| GHSA-g3wg-6mcf-8jj6 | Maven | org.mortbay.jetty:jetty-webapp | >=10.0.0.beta1 <10.0.0.beta3 | 10.0.0.beta3 |
| GHSA-g3wg-6mcf-8jj6 | Maven | org.eclipse.jetty:jetty-webapp | >=11.0.0.beta1 <11.0.0.beta3 | 11.0.0.beta3 |
| GHSA-g3wg-6mcf-8jj6 | Maven | org.mortbay.jetty:jetty-webapp | >=11.0.0.beta1 <11.0.0.beta3 | 11.0.0.beta3 |
References
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=567921
- https://github.com/eclipse/jetty.project/security/advisories/GHSA-g3wg-6mcf-8jj6#advisory-comment-63053
- https://lists.apache.org/thread.html/r0259b14ae69b87821e27fed1f5333ea86018294fd31aab16b1fac84e%40%3Cissues.beam.apache.org%3E
- https://lists.apache.org/thread.html/r07525dc424ed69b3919618599e762f9ac03791490ca9d724f2241442%40%3Cdev.felix.apache.org%3E
- https://lists.apache.org/thread.html/r09b345099b4f88d2bed7f195a96145849243fb4e53661aa3bcf4c176%40%3Cissues.zookeeper.apache.org%3E