Jenkins up to 2.121.1/2.132 404 Error Page Stapler.java cross site scripting

Summaryinfo

A vulnerability has been found in Jenkins up to 2.121.1/2.132 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file org/kohsuke/stapler/Stapler.java of the component 404 Error Page. The manipulation leads to cross site scripting. This vulnerability is documented as CVE-2018-1999007. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Jenkins up to 2.121.1/2.132 (Continuous Integration Software). It has been rated as problematic. This issue affects an unknown part of the file org/kohsuke/stapler/Stapler.java of the component 404 Error Page. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

A cross-site scripting vulnerability exists in Jenkins 2.132 and earlier, 2.121.1 and earlier in the Stapler web framework's org/kohsuke/stapler/Stapler.java that allows attackers with the ability to control the existence of some URLs in Jenkins to define JavaScript that would be executed in another user's browser when that other user views HTTP 404 error pages while Stapler debug mode is enabled.

The bug was discovered 07/18/2018. The weakness was released 07/23/2018 (Website). It is possible to read the advisory at jenkins.io. The identification of this vulnerability is CVE-2018-1999007 since 07/23/2018. The attack may be initiated remotely. A simple authentication is necessary for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 111176 (FreeBSD : jenkins -- multiple vulnerabilities (20a1881e-8a9e-11e8-bddf-d017c2ca229d)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 13217 (Jenkins Arbitrary File Access Vulnerability).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (111176). Entries connected to this vulnerability are available at VDB-122105, VDB-122106, VDB-122107 and VDB-122108. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Continuous Integration Software

Name

• Jenkins

Version

• 2.121.0
• 2.121.1
• 2.132

License

• open-source

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Be aware that VulDB is the high quality source for vulnerability data.

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