CVE-2023-27902: Medium severity jenkins lts vulnerability
A flaw was found in Jenkins. Jenkins uses temporary directories adjacent to workspace directories, usually with the @tmp name suffix, to store temporary files related to the build. In pipelines, these temporary directories are adjacent to the current working directory when operating in a subdirectory of the automatically allocated workspace. Jenkins-controlled processes, like SCMs, may store credentials in these directories. Affected versions of Jenkins show these temporary directories when viewing job workspaces, which allows attackers with Item/Workspace permission to access their contents.
Other sources
Jenkins 2.393 and earlier, LTS 2.375.3 and earlier shows temporary directories related to job workspaces, which allows attackers with Item/Workspace permission to access their contents.
Jenkins uses temporary directories adjacent to workspace directories, usually with the @tmp name suffix, to store temporary files related to the build. In pipelines, these temporary directories are adjacent to the current working directory when operating in a subdirectory of the automatically allocated workspace. Jenkins-controlled processes, like SCMs, may store credentials in these directories.
Jenkins 2.393 and earlier, LTS 2.375.3 and earlier, and prior to LTS 2.387.1 shows these temporary directories when viewing job workspaces, which allows attackers with Item/Workspace permission to access their contents.
Jenkins 2.394, LTS 2.375.4, and LTS 2.387.1 does not list these temporary directories in job workspaces.
As a workaround, do not grant Item/Workspace permission to users who lack Item/Configure permission, if you’re concerned about this issue but unable to immediately update Jenkins.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2023-27902?
CVE-2023-27902 is a vulnerability found in Jenkins where temporary directories adjacent to workspace directories are used to store temporary files related to the build.
How severe is CVE-2023-27902?
CVE-2023-27902 has a severity score of 4.3 out of 10.
What software versions are affected by CVE-2023-27902?
Jenkins versions 2.393 and earlier LTS 2.375.3 and earlier are affected by CVE-2023-27902.
How can CVE-2023-27902 be fixed?
To fix CVE-2023-27902, update Jenkins to version 2.394 or LTS to version 2.375.4.
What is the CWE category of CVE-2023-27902?
CVE-2023-27902 falls under CWE category 266.