CVE-2020-27216: apache beam

Vulnerability summary

CVE-2020-27216 is a high (CVSS 7.0) vulnerability in apache beam. EPSS estimates a 4.35% chance of exploitation in the next 30 days, higher than 91.2% of scored vulnerabilities. 2 public exploits are recorded.

Timeline

1. 23-10-2020
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

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.

• CWE-378Creation of Temporary File With Insecure PermissionsOpening temporary files without appropriate measures or controls can leave the file, its contents and any function that it impacts vulnerable to attack.
• CWE-379Creation of Temporary File in Directory with Insecure PermissionsThe product creates a temporary file in a directory whose permissions allow unintended actors to determine the file's existence or otherwise access that file.