CVE-2021-21610: XSS
First published: Wed Jan 13 2021(Updated: )
A flaw was found in jenkins. A cross-site scripting (XSS) vulnerability is possible due to the lack of restrictions in URL rendering in the formatted previews of markup passed as a query parameter if the configured markup formatter does not prohibit unsafe elements in the markup. The highest threat from this vulnerability is to data confidentiality and integrity.
Credit: jenkinsci-cert@googlegroups.com jenkinsci-cert@googlegroups.com jenkinsci-cert@googlegroups.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| maven/org.jenkins-ci.main:jenkins-core | >=2.264<=2.274 | 2.275 |
| maven/org.jenkins-ci.main:jenkins-core | <=2.263.1 | 2.263.2 |
| Jenkins Jenkins | <=2.263.1 | |
| Jenkins Jenkins | <=2.274 | |
| redhat/jenkins | <0:2.263.3.1612433584-1.el7 | 0:2.263.3.1612433584-1.el7 |
| redhat/conmon | <2:2.0.21-1.rhaos4.5.el7 | 2:2.0.21-1.rhaos4.5.el7 |
| redhat/jenkins | <0:2.263.3.1612434332-1.el7 | 0:2.263.3.1612434332-1.el7 |
| redhat/machine-config-daemon | <0:4.5.0-202102050524.p0.git.2594.ff3b8c0.el8 | 0:4.5.0-202102050524.p0.git.2594.ff3b8c0.el8 |
| redhat/openshift | <0:4.5.0-202102050524.p0.git.0.9229406.el7 | 0:4.5.0-202102050524.p0.git.0.9229406.el7 |
| redhat/openshift-ansible | <0:4.5.0-202102031005.p0.git.0.c6839a2.el7 | 0:4.5.0-202102031005.p0.git.0.c6839a2.el7 |
| redhat/openshift-clients | <0:4.5.0-202102051529.p0.git.3612.61b096a.el8 | 0:4.5.0-202102051529.p0.git.3612.61b096a.el8 |
| redhat/runc | <0:1.0.0-72.rhaos4.5.giteadfc6b.el8 | 0:1.0.0-72.rhaos4.5.giteadfc6b.el8 |
| redhat/jenkins | <0:2.263.3.1612434510-1.el8 | 0:2.263.3.1612434510-1.el8 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2021-21610
- https://www.jenkins.io/security/advisory/2021-01-13/#SECURITY-2153
- https://github.com/jenkinsci/jenkins/commit/89ec0c40b68cd1e4e9f9ef5ebcafd87e7fa16589
- https://github.com/advisories/GHSA-7qf3-c2q8-69m3 (Advisory)
- https://access.redhat.com/errata/RHSA-2021:0423
- https://access.redhat.com/security/cve/cve-2021-21610
- https://access.redhat.com/errata/RHSA-2021:0429
- https://bugzilla.redhat.com/show_bug.cgi?id=1925151
- https://www.cve.org/CVERecord?id=CVE-2021-21610 https://nvd.nist.gov/vuln/detail/CVE-2021-21610
- https://access.redhat.com/errata/RHSA-2021:0637
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the severity of CVE-2021-21610?
The severity of CVE-2021-21610 is high.
How does CVE-2021-21610 affect Jenkins?
CVE-2021-21610 is a cross-site scripting (XSS) vulnerability in Jenkins that allows for potential attacks due to the lack of restrictions in URL rendering.
Which versions of Jenkins are affected by CVE-2021-21610?
Jenkins versions 2.274 and earlier LTS 2.263.1 and earlier are affected by CVE-2021-21610.
How can I fix CVE-2021-21610?
To fix CVE-2021-21610, update Jenkins to version 2.275 or Jenkins LTS to version 2.263.2.
Where can I find more information about CVE-2021-21610?
You can find more information about CVE-2021-21610 on the Red Hat website.
- collector/redhat-cve
- collector/nvd-index
- collector/nvd-api
- collector/github-advisory-latest
- alias/GHSA-7qf3-c2q8-69m3
- alias/CVE-2021-21610
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- package-manager/redhat
- vendor/jenkins
- canonical/jenkins jenkins
- version/jenkins jenkins/2.263.1
- version/jenkins jenkins/2.274
- package-manager/maven