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.
Published 2021-11-04 17:15:09
Updated 2023-11-22 21:22:28
View at NVD,   CVE.org

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 27,527
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2021-21696!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2021-21696

Probability of exploitation activity in the next 30 days: 0.27%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 64 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2021-21696

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
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

Products affected by CVE-2021-21696

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