Vulnerability · Published Jun 30, 2021 · Assigned by jenkins
CVE-2021-21671
High 7.5
In plain English
A high-severity security flaw in Jenkins from Jenkins project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.8% (higher than 78% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.8%top 22.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Jenkins 2.299 and earlier, LTS 2.289.1 and earlier does not invalidate the previous session on login.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | org.jenkins-ci.main:jenkins-core | 2.300 | GHSA-4wr9-2xc6-jmg5 |
| Maven | org.jenkins-ci.main:jenkins-core | 2.289.2 | GHSA-4wr9-2xc6-jmg5 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Jenkins project | Jenkins | 2.266 – before unspecifiedLTS 2.277.1 – before unspecifiedunspecified – through 2.299unspecified – through LTS 2.289.1 |
References
- https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2371 x_refsource_CONFIRM
- [oss-security] 20210630 Multiple vulnerabilities in Jenkins and Jenkins plugins mailing-list, x_refsource_MLIST