Critical severity · published Nov 4, 2021
CVE-2021-21690
Agent processes are able to completely bypass file path filtering by wrapping the file operation in an agent file path in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier
9.8
CVSS
2.5%
EPSS
No
On KEV
Description
Agent processes are able to completely bypass file path filtering by wrapping the file operation in an agent file path in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.5% · higher than 85% 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-2021-21690
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21690
Vendor Advisory
https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455
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