CVE-2021-21671
First published: Wed Jun 30 2021(Updated: )
Jenkins 2.299 and earlier, LTS 2.289.1 and earlier does not invalidate the previous session on login.
Credit: jenkinsci-cert@googlegroups.com jenkinsci-cert@googlegroups.com jenkinsci-cert@googlegroups.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/jenkins | <0:2.289.2.1629437819-1.el8 | 0:2.289.2.1629437819-1.el8 |
| redhat/jenkins | <0:2.289.2.1628252553-1.el8 | 0:2.289.2.1628252553-1.el8 |
| redhat/jenkins | <0:2.289.3.1633554819-1.el8 | 0:2.289.3.1633554819-1.el8 |
| Jenkins Jenkins | >=2.266<2.300 | |
| Jenkins Jenkins | >=2.277.1<2.289.2 | |
| maven/org.jenkins-ci.main:jenkins-core | <=2.289.1 | 2.289.2 |
| maven/org.jenkins-ci.main:jenkins-core | >=2.292<=2.299 | 2.300 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2021-21671
- https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2371
- http://www.openwall.com/lists/oss-security/2021/06/30/1
- https://github.com/jenkinsci/jenkins/commit/25a42f3942fd9f8bd768c887c679dbc796b4fcd5
- https://github.com/advisories/GHSA-4wr9-2xc6-jmg5 (Advisory)
- https://access.redhat.com/errata/RHSA-2021:3820
- https://access.redhat.com/security/cve/cve-2021-21671
- https://bugzilla.redhat.com/show_bug.cgi?id=2007750
- https://www.cve.org/CVERecord?id=CVE-2021-21671 https://nvd.nist.gov/vuln/detail/CVE-2021-21671 https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2371
- https://access.redhat.com/errata/RHBA-2021:3396
- https://access.redhat.com/errata/RHBA-2021:3033
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is CVE-2021-21671?
CVE-2021-21671 is a vulnerability in Jenkins 2.299 and earlier LTS 2.289.1 and earlier.
How does CVE-2021-21671 allow attackers to gain access to Jenkins?
CVE-2021-21671 allows attackers to use social engineering techniques to gain administrator access to Jenkins.
What is the severity of CVE-2021-21671?
The severity of CVE-2021-21671 is high, with a severity value of 7.5.
Which versions of Jenkins are affected by CVE-2021-21671?
Jenkins 2.299 and earlier, LTS 2.289.1 and earlier are affected by CVE-2021-21671.
How do I fix CVE-2021-21671?
To fix CVE-2021-21671, update to Jenkins 2.300 or LTS 2.289.2 or later.
- collector/redhat-cve
- collector/nvd-index
- collector/nvd-api
- collector/nvd-cve
- collector/github-advisory-latest
- alias/GHSA-4wr9-2xc6-jmg5
- alias/CVE-2021-21671
- collector/github-advisory
- agent/type
- agent/last-modified-date
- agent/first-publish-date
- agent/softwarecombine
- agent/author
- agent/references
- agent/severity
- agent/weakness
- agent/description
- collector/redhat-bugzilla
- source/Red Hat
- agent/software-canonical-lookup
- agent/tags
- agent/event
- collector/mitre-cve
- source/MITRE
- package-manager/redhat
- vendor/jenkins
- canonical/jenkins jenkins
- version/jenkins jenkins/2.266
- version/jenkins jenkins/2.277.1
- package-manager/maven