CVE-2021-21696

· CRITICALModified

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CVSS v3.1

9.8

EPSS

2.32%

Published

Nov 4, 2021

Modified

Nov 21, 2024

Public PoC / Exploit

All weaponized →

No public PoC or exploit code indexed for this CVE.

Links to public security research (Exploit-DB, Nuclei, Trickest, GitHub) for defensive use only.

Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Products (2)

jenkins · jenkinsvulnerable

References (4)

http://www.openwall.com/lists/oss-security/2021/11/04/3

Mailing ListThird Party Advisory

https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2423

MitigationVendor Advisory

http://www.openwall.com/lists/oss-security/2021/11/04/3

Mailing ListThird Party Advisory

https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2423

MitigationVendor Advisory

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