Medium severity · published Jan 26, 2021
CVE-2021-21615
Jenkins 2.275 and LTS 2.263.2 allows reading arbitrary files using the file browser for workspaces and archived artifacts due to a time-of-check to time-of-use (TOCTOU) race…
5.3
CVSS
0.9%
EPSS
No
On KEV
Description
Jenkins 2.275 and LTS 2.263.2 allows reading arbitrary files using the file browser for workspaces and archived artifacts due to a time-of-check to time-of-use (TOCTOU) race condition.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 60% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JE
Jenkins · Jenkins
before 2.263.3; before 2.276 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21615
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21615
Mailing List
http://www.openwall.com/lists/oss-security/2021/01/26/2
Vendor Advisory
https://www.jenkins.io/security/advisory/2021-01-26/#SECURITY-2197
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