CVE-2023-27903 Incorrect Authorization in Jenkins Core

What is CVE-2023-27903?

CVE-2023-27903 is a medium-severity vulnerability in Jenkins Jenkins, published on 8 Mar 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Jenkins 2.393 and earlier, LTS 2.375.3 and earlier creates a temporary file in the default temporary directory with the default permissions for newly created files when uploading a file parameter through the CLI, potentially allowing attackers with access to the Jenkins controller file system to read and write the file before it is used.

Weakness: CWE-863

Which versions are affected by CVE-2023-27903?

7 open source packages ship an affected version, including org.jenkins-ci.main:jenkins-core and jenkins. It affects 1 product.

Products include Jenkins Jenkins.

How do I fix CVE-2023-27903?

Upgrade org.jenkins-ci.main:jenkins-core to a fixed version for your release line: 2.375.4, 2.387.1 or 2.394.

Is CVE-2023-27903 being exploited?

There is no known exploitation of CVE-2023-27903 in the wild and no public exploit code.

Other vulnerabilities in Jenkins Jenkins

• CVE-2024-23897 Jenkins Command Line Interface (CLI) Path Traversal Exploited Critical 9.8
• CVE-2018-1000861 Jenkins Stapler Web Framework Deserialization of Untrusted Data Exploited Critical 9.8
• CVE-2017-1000353 Jenkins Remote Code Execution Exploited Critical 9.8
• CVE-2015-5317 Jenkins User Interface (UI) Information Disclosure Exploited High 7.5
• CVE-2021-21690 Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins Critical 9.8

All Jenkins Jenkins vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-jenkins-2023-27903, GHSA-584m-7r4m-8j6v.