Critical severity · published Nov 4, 2021
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 directory stored in Jenkins with very few restrictions
9.1
CVSS
1.6%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 76% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JE
Jenkins · Jenkins
through 2.303.2; through 2.318 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21697
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21697
Mailing List
http://www.openwall.com/lists/oss-security/2021/11/04/3
Patch
https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2428
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