Vulnerability Details : CVE-2021-21696
Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not limit agent read/write access to the libs/ directory inside build directories when using the FilePath APIs, allowing attackers in control of agent processes to replace the code of a trusted library with a modified variant. This results in unsandboxed code execution in the Jenkins controller process.
Products affected by CVE-2021-21696
- cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*
- cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*
Threat overview for CVE-2021-21696
Top countries where our scanners detected CVE-2021-21696
Top open port discovered on systems with this issue
80
IPs affected by CVE-2021-21696 30,364
Threat actors abusing to this issue?
Yes
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affected by CVE-2021-21696!
*Directly or indirectly through your vendors, service providers and 3rd parties.
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Exploit prediction scoring system (EPSS) score for CVE-2021-21696
1.64%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 80 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-21696
| 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 |
References for CVE-2021-21696
-
http://www.openwall.com/lists/oss-security/2021/11/04/3
oss-security - Multiple vulnerabilities in Jenkins and Jenkins pluginsMailing List;Third Party Advisory
-
https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2423
Jenkins Security Advisory 2021-11-04Mitigation;Vendor Advisory
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