CVE-2023-43496

jenkins: Temporary plugin file created with insecure permissions

Published Sep 20, 2023 CVSS 3.1 · 8.8 High EPSS 1.0% KEV · Not listed
Description
Jenkins 2.423 and earlier, LTS 2.414.1 and earlier creates a temporary file in the system temporary directory with the default permissions for newly created files when installing a plugin from a URL, potentially allowing attackers with access to the system temporary directory to replace the file before it is installed in Jenkins, potentially resulting in arbitrary code execution.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-2426 Jenkins 2.423 and earlier, LTS 2.414.1 and earlier creates a temporary file in the system temporary directory with the default permissions for newly created files when installing a plugin from a URL, potentially allowing attackers with access to the system temporary directory to replace the file before it is installed in Jenkins, potentially resulting in arbitrary code execution.
Github GHSA Github GHSA GHSA-55wp-3pq4-w8p9 Jenkins temporary plugin file created with insecure permissions
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
jenkins
Published
Updated
May 2, 2025, 3:32 PM
Reserved
Sep 19, 2023, 9:22 AM
Status
Modified
Published
Sep 20, 2023, 5:15 PM
Modified
Jun 17, 2026, 6:25 AM
Severity
Important
Public date
Sep 20, 2023, 12:00 AM