CVE-2023-43496
highpriority · track · 35OT risk · elevatedEPSS 0.010 · 64 %ileDEEURUUSEPSS · scored 2026-10-22
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (37)
Products and version ranges known to be affected.
advisories (5)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2023-2411Jenkins: Mehrere SchwachstellenDeutsch2023-09-20csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Jenkins ausnutzen, um beliebigen Code auszuführen, vertrauliche Informationen offenzulegen, XSS-Angriffe durchzuführen, Dateien zu manipulieren oder Cross-Site Request Forgery-Angriffe durchzuführen.
- WID-SEC-W-2024-0106Oracle Communications: Mehrere SchwachstellenDeutsch2024-01-16csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Oracle Communications ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.
- WID-SEC-W-2024-0869Oracle Communications: Mehrere SchwachstellenDeutsch2024-04-16csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Oracle Communications ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.
- GHSA-55wp-3pq4-w8p9Jenkins temporary plugin file created with insecure permissions 2023-09-20ghsa · osvUS
Jenkins creates a temporary file when a plugin is deployed directly from a URL. Jenkins 2.423 and earlier, LTS 2.414.1 and earlier creates this temporary file in the system temporary directory with the default permissions for newly created files. If these permissions are overly permissive, they may allow attackers with access to the Jenkins controller file system to read and write the file before it is installed in Jenkins, potentially resulting in arbitrary code execution. This vulnerability only affects operating systems using a shared temporary directory for all users (typically Linux). Additionally, the default permissions for newly created files generally only allow attackers to read the temporary file, but not write to it. This issue complements SECURITY-2823, which affected plugins uploaded from an administrator’s computer. Jenkins 2.424, LTS 2.414.2 creates the temporary file in a subdirectory with more restrictive permissions. As a workaround, you can change your default temporary-file directory using the Java system property java.io.tmpdir, if you’re concerned about this issue but unable to immediately update Jenkins.
- BIT-jenkins-2023-434962024-03-06vendor · osvUS
Jenkins 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.
also known as (6)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (10)
External citations — patches, advisories, analysis.
- http://www.openwall.com/lists/oss-security/2023/09/20/5cnnvd
- https://cxsecurity.com/cveshow/CVE-2023-43496/cnnvd
- https://www.auscert.org.au/bulletins/ESB-2023.5437cnnvd
- https://www.jenkins.io/security/advisory/2023-09-20/#SECURITY-3072cnnvd
- https://www.oracle.com/security-alerts/cpuapr2024.htmlcnnvd
- https://www.oracle.com/security-alerts/cpujan2024.htmlcnnvd
- http://www.openwall.com/lists/oss-security/2023/09/20/5enisa_euvd
- https://www.jenkins.io/security/advisory/2023-09-20/#SECURITY-3072enisa_euvd
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