CVE-2021-21692: Path Traversal
First published: Thu Nov 04 2021(Updated: )
FilePath#renameTo and FilePath#moveAllChildrenTo in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier only check 'read' agent-to-controller access permission on the source path, instead of 'delete'.
Credit: jenkinsci-cert@googlegroups.com jenkinsci-cert@googlegroups.com jenkinsci-cert@googlegroups.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Jenkins Jenkins | <2.303.3 | |
| Jenkins Jenkins | <2.319 | |
| redhat/jenkins | <2.319 | 2.319 |
| redhat/jenkins LTS | <2.303.3 | 2.303.3 |
| maven/org.jenkins-ci.main:jenkins-core | <=2.303.2 | 2.303.3 |
| maven/org.jenkins-ci.main:jenkins-core | >=2.304<=2.318 | 2.319 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2021-21692
- https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455
- https://github.com/jenkinsci/jenkins/commit/104c751d907919dd53f5090f84d53c671a66457b
- https://github.com/jenkinsci/jenkins/commit/5a245e42979abe4a26d41727c839521e36cedd74
- https://github.com/jenkinsci/jenkins/commit/63cde2daadc705edf086f2213b48c8c547f98358
- https://github.com/advisories/GHSA-8xg4-xq2v-v6j7 (Advisory)
- https://access.redhat.com/errata/RHSA-2021:4833
- https://access.redhat.com/errata/RHSA-2021:4829
- https://access.redhat.com/errata/RHSA-2021:4801
- https://access.redhat.com/errata/RHSA-2021:4799
- https://access.redhat.com/errata/RHSA-2021:4827
- https://access.redhat.com/security/cve/cve-2021-21692
- https://bugzilla.redhat.com/show_bug.cgi?id=2020339
Frequently Asked Questions
What is CVE-2021-21692?
CVE-2021-21692 is a vulnerability in Jenkins 2.318 and earlier LTS 2.303.2 and earlier that affects the 'FilePath#renameTo' and 'FilePath#moveAllChildrenTo' functions.
What is the severity of CVE-2021-21692?
CVE-2021-21692 has a severity rating of 9.8, which is considered critical.
What is the impact of CVE-2021-21692?
CVE-2021-21692 can allow an attacker to perform unauthorized deletion of files and directories.
How can I fix CVE-2021-21692?
To fix CVE-2021-21692, upgrade your Jenkins installation to version 2.319 or LTS 2.303.3.
Where can I find more information about CVE-2021-21692?
You can find more information about CVE-2021-21692 at the following references: [Jenkins Security Advisory](https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455) and [Red Hat Security Advisory](https://access.redhat.com/errata/RHSA-2021:4833) or [Red Hat Security Advisory](https://access.redhat.com/errata/RHSA-2021:4829).
- collector/nvd-index
- collector/nvd-cve
- collector/nvd-api
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- alias/GHSA-8xg4-xq2v-v6j7
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- package-manager/maven
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