Medium severity · published Jan 13, 2021
CVE-2021-21606
Jenkins 2.274 and earlier, LTS 2.263.1 and earlier improperly validates the format of a provided fingerprint ID when checking for its existence allowing an attacker to check for…
4.3
CVSS
1.2%
EPSS
No
On KEV
Description
Jenkins 2.274 and earlier, LTS 2.263.1 and earlier improperly validates the format of a provided fingerprint ID when checking for its existence allowing an attacker to check for the existence of XML files with a short path.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 69% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JE
Jenkins · Jenkins
through 2.263.1; through 2.274 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21606
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21606
Vendor Advisory
https://www.jenkins.io/security/advisory/2021-01-13/#SECURITY-2023
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