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CVE-2021-21690

Good to know:

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Date: November 4, 2021

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.

Language: Java

Severity Score

Related Resources (7)

https://nvd.nist.gov/vuln/detail/CVE-2021-21690
https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455
ttps://github.com/jenkinsci/jenkins
https://github.com/jenkinsci/jenkins/commit/5a245e42979abe4a26d41727c839521e36cedd74
https://github.com/jenkinsci/jenkins/commit/63cde2daadc705edf086f2213b48c8c547f98358
https://github.com/jenkinsci/jenkins/commit/104c751d907919dd53f5090f84d53c671a66457b
https://www.mend.io/vulnerability-database/CVE-2021-21690

Severity Score

Weakness Type (CWE)

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-22

Protection Mechanism Failure

CWE-693

Top Fix

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Upgrade Version

Upgrade to version org.jenkins-ci.main:jenkins-core:2.303.3;org.jenkins-ci.main:jenkins-core:2.319

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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