A unauthorized modification of configuration vulnerability exists in Jenkins 2.132 and earlier, 2.121.1 and earlier in User.java that allows attackers to provide crafted login credentials that cause Jenkins to move the config.xml file from the Jenkins home directory. If Jenkins is started without this file present, it will revert to the legacy defaults of granting administrator access to anonymous users.

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

  - A unauthorized modification of configuration vulnerability exists in Jenkins 2.132 and earlier, 2.121.1
    and earlier in User.java that allows attackers to provide crafted login credentials that cause Jenkins to
    move the config.xml file from the Jenkins home directory. If Jenkins is started without this file present,
    it will revert to the legacy defaults of granting administrator access to anonymous users.
    (CVE-2018-1999001)

The version of Jenkins running on the remote web server is prior to 2.133 or is a version of Jenkins LTS prior to 2.121.2. It is, therefore, affected by multiple vulnerabilities.

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

Jenkins Security Advisory : Description(High) SECURITY-897 / CVE-2018-1999001 Users without Overall/Read permission can have Jenkins reset parts of global configuration on the next restart (High) SECURITY-914 / CVE-2018-1999002 Arbitrary file read vulnerability (Medium) SECURITY-891 / CVE-2018-1999003 Unauthorized users could cancel queued builds (Medium) SECURITY-892 / CVE-2018-1999004 Unauthorized users could initiate and abort agent launches (Medium) SECURITY-944 / CVE-2018-1999005 Stored XSS vulnerability (Medium) SECURITY-925 / CVE-2018-1999006 Unauthorized users are able to determine when a plugin was extracted from its JPI package (Medium) SECURITY-390 / CVE-2018-1999007 XSS vulnerability in Stapler debug mode

ID	Name	Product	Family	Type	Severity
416252	SCA: security update for org.jenkins-ci.main:jenkins-core (GHSA-j8qv-mj4r-6fw4)	Tenable Cloud Security	SCA Checks	Local	high
416252	SCA: security update for org.jenkins-ci.main:jenkins-core (GHSA-j8qv-mj4r-6fw4)	Tenable Self-Hosted Container Security	SCA Checks	Local	high
111603	Jenkins < 2.121.2 / 2.133 Multiple Vulnerabilities	Nessus	CGI abuses	Combined	high
111176	FreeBSD : jenkins -- multiple vulnerabilities (20a1881e-8a9e-11e8-bddf-d017c2ca229d)	Nessus	FreeBSD Local Security Checks	Local	high

Detections

Analytics

CVE-2018-1999001

high

Tenable Plugins

high

high

high

high