CVE-2023-43496
First published: Wed Sep 20 2023(Updated: )
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.
Credit: jenkinsci-cert@googlegroups.com jenkinsci-cert@googlegroups.com jenkinsci-cert@googlegroups.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Jenkins Jenkins | <2.414.2 | |
| Jenkins Jenkins | <2.424 | |
| <2.414.2 | ||
| <2.424 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2023-43496
- https://www.jenkins.io/security/advisory/2023-09-20/#SECURITY-3072
- http://www.openwall.com/lists/oss-security/2023/09/20/5
- https://github.com/jenkinsci/jenkins/commit/df7c4ccda8976c06bf31b8fb9938f26fc38501ca
- https://github.com/advisories/GHSA-55wp-3pq4-w8p9 (Advisory)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/266554
- https://www.ibm.com/support/pages/node/7096365 (Advisory)
Frequently Asked Questions
What is CVE-2023-43496?
CVE-2023-43496 is a vulnerability in Jenkins where it creates a temporary file with insecure permissions.
How can CVE-2023-43496 be exploited?
CVE-2023-43496 can be exploited by an attacker with access to the system temporary directory, allowing them to modify or replace the temporary file.
What is the severity of CVE-2023-43496?
CVE-2023-43496 has a severity rating of 8.8 (high).
How do I fix CVE-2023-43496?
To fix CVE-2023-43496, upgrade Jenkins to version 2.424 or higher.
Are there any references for CVE-2023-43496?
Yes, you can find references for CVE-2023-43496 at the following links: [link1](http://www.openwall.com/lists/oss-security/2023/09/20/5), [link2](https://www.jenkins.io/security/advisory/2023-09-20/#SECURITY-3072), [link3](https://nvd.nist.gov/vuln/detail/CVE-2023-43496)
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