High severity · published Nov 4, 2021
CVE-2021-21688
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…
7.5
CVSS
1.4%
EPSS
No
On KEV
Description
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).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 73% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JE
Jenkins · Jenkins
before 2.303.3; before 2.319 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21688
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21688
Vendor Advisory
https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455
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