The file browser in Jenkins 2.314 and earlier, LTS 2.303.1 and earlier may interpret some paths to files as absolute on Windows, resulting in a path traversal vulnerability allowing attackers with Overall/Read permission (Windows controller) or Job/Workspace permission (Windows agents) to obtain the contents of arbitrary files.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - The file browser in Jenkins 2.314 and earlier, LTS 2.303.1 and earlier may interpret some paths to files
    as absolute on Windows, resulting in a path traversal vulnerability allowing attackers with Overall/Read
    permission (Windows controller) or Job/Workspace permission (Windows agents) to obtain the contents of
    arbitrary files. (CVE-2021-21683)

The version of Jenkins Enterprise or Jenkins Operations Center running on the remote web server is 2.249.x prior to 2.249.33.0.1, 2.277.x prior to 2.277.42.0.1, or 2.x prior to 2.303.2.5. It is, therefore, affected by multiple vulnerabilities, including the following:

  - org.apache.http.conn.ssl.AbstractVerifier in Apache HttpComponents HttpClient before 4.3.5 and     HttpAsyncClient before 4.0.2 does not properly verify that the server hostname matches a domain name in     the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows     man-in-the-middle attackers to spoof SSL servers via a 'CN=' string in a field in the distinguished name     (DN) of a certificate, as demonstrated by the 'foo,CN=www.apache.org' string in the O field.
    (CVE-2014-3577)

  - Jenkins 2.314 and earlier, LTS 2.303.1 and earlier accepts names of jobs and other entities with a     trailing dot character, potentially replacing the configuration and data of other entities on Windows.
    (CVE-2021-21682)

  - The file browser in Jenkins 2.314 and earlier, LTS 2.303.1 and earlier may interpret some paths to files     as absolute on Windows, resulting in a path traversal vulnerability allowing attackers with Overall/Read     permission (Windows controller) or Job/Workspace permission (Windows agents) to obtain the contents of     arbitrary files. (CVE-2021-21683)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to its its self-reported version number, the version of Jenkins running on the remote web server is Jenkins LTS prior to 2.303.2 or Jenkins weekly prior to 2.315. It is, therefore, affected by multiple vulnerabilities:

  - Jenkins 2.314 and earlier, LTS 2.303.1 and earlier accepts names of jobs and other entities with a     trailing dot character, potentially replacing the configuration and data of other entities on Windows.
    (CVE-2021-21682)

  - org.apache.http.conn.ssl.AbstractVerifier in Apache HttpComponents HttpClient before 4.3.5 and     HttpAsyncClient before 4.0.2 does not properly verify that the server hostname matches a domain name in     the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-     middle attackers to spoof SSL servers via a CN= string in a field in the distinguished name (DN) of a     certificate, as demonstrated by the foo,CN=www.apache.org string in the O field. (CVE-2014-3577)

  - The file browser in Jenkins 2.314 and earlier, LTS 2.303.1 and earlier may interpret some paths to files     as absolute on Windows, resulting in a path traversal vulnerability allowing attackers with Overall/Read     permission (Windows controller) or Job/Workspace permission (Windows agents) to obtain the contents of     arbitrary files. (CVE-2021-21683)

  - Jenkins Git Plugin 4.8.2 and earlier does not escape the Git SHA-1 checksum parameters provided to commit     notifications when displaying them in a build cause, resulting in a stored cross-site scripting (XSS)     vulnerability. (CVE-2021-21684)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
410325	SCA: security update for org.jenkins-ci.main:jenkins-core (GHSA-4pw5-r58h-fv24)	Tenable Cloud Security	SCA Checks	medium
410325	SCA: security update for org.jenkins-ci.main:jenkins-core (GHSA-4pw5-r58h-fv24)	Tenable Self-Hosted Container Security	SCA Checks	medium
155661	Jenkins Enterprise and Operations Center < 2.249.33.0.1 / 2.277.42.0.1 / 2.303.2.5 Multiple Vulnerabilities (CloudBees Security Advisory 2021-10-06)	Nessus	CGI abuses	medium
154055	Jenkins LTS < 2.303.2 / Jenkins weekly < 2.315 Multiple Vulnerabilities	Nessus	CGI abuses	medium

Detections

Analytics

CVE-2021-21683

medium

Tenable Plugins

medium

medium

medium

medium