CVE-2021-21611: XSS
First published: Wed Jan 13 2021(Updated: )
A flaw was found in jenkins. A cross-site scripting (XSS) vulnerability is possible due to display names and IDs of item types shown on the New Item page not being properly escaped. 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 |
|---|---|---|
| redhat/jenkins | <2.275 | 2.275 |
| redhat/jenkins LTS | <2.263.2 | 2.263.2 |
| 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.el8 | 2:2.0.21-1.rhaos4.5.el8 |
| 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.el8 | 0:4.5.0-202102050524.p0.git.0.9229406.el8 |
| 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.el7 | 0:4.5.0-202102051529.p0.git.3612.61b096a.el7 |
| 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 |
| Jenkins Jenkins | <=2.263.1 | |
| Jenkins Jenkins | <=2.274 | |
| 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 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2021-21611
- https://www.jenkins.io/security/advisory/2021-01-13/#SECURITY-2171
- https://github.com/jenkinsci/jenkins/commit/8c451b08886561a914ef0c30cbb9d40ea33a9bbe
- https://github.com/advisories/GHSA-mj7q-cmf3-mg7h (Advisory)
- https://access.redhat.com/errata/RHSA-2021:0423
- https://access.redhat.com/security/cve/cve-2021-21611
- https://access.redhat.com/errata/RHSA-2021:0429
- https://bugzilla.redhat.com/show_bug.cgi?id=1925145
- https://www.cve.org/CVERecord?id=CVE-2021-21611 https://nvd.nist.gov/vuln/detail/CVE-2021-21611
- https://access.redhat.com/errata/RHSA-2021:0637
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the severity of CVE-2021-21611?
The severity of CVE-2021-21611 is high.
How does CVE-2021-21611 affect Jenkins?
CVE-2021-21611 affects Jenkins versions 2.274 and earlier, LTS 2.263.1 and earlier.
What is the vulnerability in CVE-2021-21611?
CVE-2021-21611 is a cross-site scripting (XSS) vulnerability in Jenkins.
How can an attacker exploit CVE-2021-21611?
An attacker can exploit CVE-2021-21611 by specifying display names or IDs of item types on the New Item page.
How can I fix CVE-2021-21611?
To fix CVE-2021-21611, update Jenkins to version 2.275 or 2.263.2 and apply the necessary patches.
- collector/redhat-cve
- collector/nvd-index
- collector/nvd-api
- collector/github-advisory-latest
- alias/GHSA-mj7q-cmf3-mg7h
- alias/CVE-2021-21611
- collector/nvd-cve
- collector/github-advisory
- agent/type
- agent/softwarecombine
- agent/first-publish-date
- agent/references
- agent/author
- agent/weakness
- agent/severity
- collector/redhat-bugzilla
- source/Red Hat
- agent/software-canonical-lookup
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/description
- agent/event
- agent/trending
- agent/tags
- agent/source
- package-manager/redhat
- vendor/jenkins
- canonical/jenkins jenkins
- version/jenkins jenkins/2.263.1
- version/jenkins jenkins/2.274
- package-manager/maven