Medium severity · published Oct 6, 2021
CVE-2021-21683
The file browser in Jenkins 2.314 and earlier, LTS 2.303.1 and earlier may interpret some paths to files as absolute on Windows, resulting in a path traversal vulnerability…
6.5
CVSS
2.2%
EPSS
No
On KEV
Description
The file browser in Jenkins 2.314 and earlier, LTS 2.303.1 and earlier may interpret some paths to files as absolute on Windows, resulting in a path traversal vulnerability allowing attackers with Overall/Read permission (Windows controller) or Job/Workspace permission (Windows agents) to obtain the contents of arbitrary files.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.2% · higher than 82% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JE
Jenkins · Jenkins
through 2.303.1; through 2.314 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21683
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21683
Mailing List
http://www.openwall.com/lists/oss-security/2021/10/06/1
Vendor Advisory
https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2481
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