Home/CVE/Jenkins 2.318 and earlier, LTS 2.303.2 and earlier allows any agent to read and write the contents of any build director
CVE

CVE-2021-21697

Jenkins 2.318 and earlier, LTS 2.303.2 and earlier allows any agent to read and write the contents of any build director

Jenkins 2.318 and earlier, LTS 2.303.2 and earlier allows any agent to read and write the contents of any build directory stored in Jenkins with very few restrictions.

CRITICAL · CVSS 9.1 EPSS 0.01461
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
▤

Affected Products & Versions

2
jenkins<= 2.303.2
jenkins<= 2.318
▤

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 CRITICAL fixed in 2.303.3
▣

Scoring & Timeline

9.1
CRITICAL · 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 NVD04 Nov 2021 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
⚑

Vendor Advisories

5
rhsaRHSA-2021:4827Important
rhsaRHSA-2021:4829Important
rhsaRHSA-2021:4801Important
rhsaRHSA-2021:4799Important
rhsaRHSA-2021:4833Important
🔗

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/2021/11/04/3Mailing ListThird Party Advisory
https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2428PatchVendor Advisory
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