Code Injection in Jenkins and Jenkins LTS - CVE-2023-27899

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Main Vulnerability Database Vulnerabilities #VU73188

Code Injection in Jenkins and Jenkins LTS - CVE-2023-27899

Published: March 9, 2023


Vulnerability identifier: #VU73188
CSH Severity: Medium
CVSS v4: 7.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-27899
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to the affected plugin creates the temporary file in the system temporary directory with the default permissions for newly created files. A remote user can read and write the file before it is installed in Jenkins and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Affected software

Jenkins
Jenkins LTS
Multicluster Engine for Kubernetes
Red Hat OpenShift Container Platform
toolbox (Red Hat package)
cri-o (Red Hat package)
haproxy (Red Hat package)
jenkins (Red Hat package)
openshift (Red Hat package)
openshift-clients (Red Hat package)
jenkins-2-plugins (Red Hat package)
kernel (Red Hat package)
kernel-rt (Red Hat package)

How to mitigate CVE-2023-27899

Install updates from vendor's website.

Jenkins - update to 2.394
Jenkins LTS - addressed in versions 2.375.4, 2.387.1
Multicluster Engine for Kubernetes - update to 2.2.4
Red Hat OpenShift Container Platform - update to 4.10.56
toolbox (Red Hat package) - update to 0.0.9-1.rhaos4.10.el8
cri-o (Red Hat package) - addressed in versions 1.23.5-8.rhaos4.10.gitcc8441d.el7, 1.23.5-8.rhaos4.10.gitcc8441d.el8
haproxy (Red Hat package) - update to 2.2.19-4.el8
jenkins (Red Hat package) - addressed in versions 2.387.1.1680701869-1.el8, 2.401.1.1686831596-3.el8
openshift (Red Hat package) - addressed in versions 4.10.0-202303221742.p0.g16bcd69.assembly.stream.el7, 4.10.0-202303221742.p0.g16bcd69.assembly.stream.el8
openshift-clients (Red Hat package) - addressed in versions 4.10.0-202304032041.p0.g3a7500d.assembly.stream.el7, 4.10.0-202304032041.p0.g3a7500d.assembly.stream.el8
jenkins-2-plugins (Red Hat package) - addressed in versions 4.10.1680703106-1.el8, 4.11.1686831822-1.el8
kernel (Red Hat package) - update to 4.18.0-305.85.1.el8_4
kernel-rt (Red Hat package) - update to 4.18.0-305.85.1.rt7.157.el8_4

External References

Related Security Bulletins