Home/CVE/Jenkins 2.299 and earlier, LTS 2.289.1 and earlier does not invalidate the previous session on login.
CVE

CVE-2021-21671

Jenkins 2.299 and earlier, LTS 2.289.1 and earlier does not invalidate the previous session on login.

Jenkins 2.299 and earlier, LTS 2.289.1 and earlier does not invalidate the previous session on login.

HIGH · CVSS 7.5 EPSS 0.00273
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
▤

Affected Products & Versions

2
jenkins>= 2.266 and < 2.300
jenkins>= 2.277.1 and < 2.289.2
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven org.jenkins-ci.main:jenkins-core HIGH fixed in 2.300
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · jenkinsci-cert@googlegroups.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD30 Jun 2021 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

3
rhsaRHSA-2021:3820Moderate
rhsaRHBA-2021:3396Moderate
rhsaRHBA-2021:3033Moderate
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2021/06/30/1Mailing ListThird Party Advisory
https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2371Vendor Advisory
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