The agent-to-controller security check FilePath#reading(FileVisitor) in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not reject any operations, allowing users to have unrestricted read access using certain operations (creating archives, FilePath#copyRecursiveTo).
Published 2021-11-04 17:15:08
Updated 2023-11-22 21:33:54
View at NVD,   CVE.org

Threat overview for CVE-2021-21688

Top countries where our scanners detected CVE-2021-21688
Top open port discovered on systems with this issue 80
IPs affected by CVE-2021-21688 28,441
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2021-21688!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2021-21688

0.18%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 55 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-21688

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.0
MEDIUM AV:N/AC:L/Au:N/C:P/I:N/A:N
10.0
2.9
NIST
7.5
HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
3.9
3.6
NIST

CWE ids for CVE-2021-21688

  • The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
    Assigned by:
    • jenkinsci-cert@googlegroups.com (Primary)
    • nvd@nist.gov (Primary)

References for CVE-2021-21688

Products affected by CVE-2021-21688

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