Jenkins up to 2.121.2/2.137 Log Computer.java information disclosure

Summaryinfo

A vulnerability was found in Jenkins up to 2.121.2/2.137 and classified as problematic. This impacts an unknown function of the file Computer.java of the component Log Handler. Such manipulation leads to information disclosure. This vulnerability is documented as CVE-2018-1999046. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Jenkins up to 2.121.2/2.137 (Continuous Integration Software). Affected by this issue is an unknown code of the file Computer.java of the component Log Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

A exposure of sensitive information vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in Computer.java that allows attackers With Overall/Read permission to access the connection log for any agent.

The bug was discovered 08/15/2018. The weakness was released 08/23/2018 (Website). The advisory is shared for download at jenkins.io. This vulnerability is handled as CVE-2018-1999046 since 08/23/2018. The attack may be launched remotely. A simple authentication is needed for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

The vulnerability scanner Nessus provides a plugin with the ID 117337 (Jenkins < 2.121.3 / 2.138 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 13256 (Jenkins Multiple Security Vulnerabilities (Jenkins Security Advisory 2018-08-15)).

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

The vulnerability is also documented in the vulnerability database at Tenable (117337). Entries connected to this vulnerability are available at VDB-123172, VDB-123173, VDB-123174 and VDB-123175. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Continuous Integration Software

Name

• Jenkins

Version

• 2.121.0
• 2.121.1
• 2.121.2
• 2.137

License

• open-source

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CPE 2.2info

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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