CVE-2021-21695
First published: Thu Nov 04 2021(Updated: )
FilePath#listFiles lists files outside directories that agents are allowed to access when following symbolic links 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 | <2.303.3 | 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-2021-21695
- https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455
- http://www.openwall.com/lists/oss-security/2021/11/04/3
- https://github.com/jenkinsci/jenkins/commit/63cde2daadc705edf086f2213b48c8c547f98358
- https://github.com/advisories/GHSA-cvvm-4cr9-r436 (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-2021-21695
- https://bugzilla.redhat.com/show_bug.cgi?id=2020343
Frequently Asked Questions
What is CVE-2021-21695?
CVE-2021-21695 is a vulnerability in Jenkins that allows the listing of files outside allowed directories when following symbolic links.
How severe is CVE-2021-21695?
CVE-2021-21695 has a severity score of 8.8, indicating a high severity.
Which software versions are affected by CVE-2021-21695?
Jenkins 2.318 and earlier, LTS 2.303.2 and earlier are affected by CVE-2021-21695.
How can I fix CVE-2021-21695?
To fix CVE-2021-21695, upgrade Jenkins to version 2.319 or LTS 2.303.3.
Where can I find more information about CVE-2021-21695?
You can find more information about CVE-2021-21695 at the following references: [link1], [link2], [link3].
- collector/nvd-index
- collector/nvd-api
- collector/github-advisory-latest
- alias/GHSA-cvvm-4cr9-r436
- alias/CVE-2021-21695
- collector/nvd-cve
- collector/github-advisory
- agent/weakness
- agent/type
- agent/softwarecombine
- agent/first-publish-date
- agent/references
- agent/severity
- agent/author
- collector/redhat-bugzilla
- source/Red Hat
- agent/software-canonical-lookup
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/event
- agent/tags
- agent/description
- agent/trending
- vendor/jenkins
- canonical/jenkins jenkins
- package-manager/maven
- package-manager/redhat