CVE-2021-21694
First published: Thu Nov 04 2021(Updated: )
FilePath#toURI, FilePath#hasSymlink, FilePath#absolutize, FilePath#isDescendant, and FilePath#get*DiskSpace do not check any permissions in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.
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-2021-21694
- 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-pgj6-jmj5-wqfx (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-2021-21694
- https://bugzilla.redhat.com/show_bug.cgi?id=2020342
Frequently Asked Questions
What is CVE-2021-21694?
CVE-2021-21694 is a vulnerability that affects Jenkins versions 2.318 and earlier, as well as LTS 2.303.2 and earlier. It allows unauthorized access to file paths and does not check permissions.
What are the affected software versions?
Jenkins versions 2.318 and earlier, and LTS 2.303.2 and earlier are affected by CVE-2021-21694.
What is the severity of CVE-2021-21694?
CVE-2021-21694 has a severity rating of 9.8 (critical).
How can I fix CVE-2021-21694?
To fix CVE-2021-21694, it is recommended to update Jenkins to version 2.319 or LTS 2.303.3, which include the necessary security patches.
Where can I find more information about CVE-2021-21694?
More information about CVE-2021-21694 can be found in the Jenkins security advisory: https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455
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