Vulnerability Details : CVE-2021-21690
Agent processes are able to completely bypass file path filtering by wrapping the file operation in an agent file path in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.
Vulnerability category: Directory traversal
Products affected by CVE-2021-21690
- cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*
- cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*
Threat overview for CVE-2021-21690
Top countries where our scanners detected CVE-2021-21690
Top open port discovered on systems with this issue
80
IPs affected by CVE-2021-21690 30,296
Threat actors abusing to this issue?
Yes
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affected by CVE-2021-21690!
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attack surface intelligence
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Exploit prediction scoring system (EPSS) score for CVE-2021-21690
0.38%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 73 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-21690
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2021-21690
-
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.Assigned by: nvd@nist.gov (Primary)
-
The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.Assigned by: jenkinsci-cert@googlegroups.com (Primary)
References for CVE-2021-21690
-
https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455
Jenkins Security Advisory 2021-11-04Vendor Advisory
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