High severity · published Jun 30, 2021
CVE-2021-21671
Jenkins 2.299 and earlier, LTS 2.289.1 and earlier does not invalidate the previous session on login
7.5
CVSS
1.8%
EPSS
No
On KEV
Description
Jenkins 2.299 and earlier, LTS 2.289.1 and earlier does not invalidate the previous session on login.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 78% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JE
Jenkins · Jenkins
2.266 before 2.300; 2.277.1 before 2.289.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21671
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21671
Mailing List
http://www.openwall.com/lists/oss-security/2021/06/30/1
Vendor Advisory
https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2371
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