Vulnerabilities > CVE-2018-1000861 - Deserialization of Untrusted Data vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in stapler/core/src/main/java/org/kohsuke/stapler/MetaClass.java that allows attackers to invoke some methods on Java objects by accessing crafted URLs that were not intended to be invoked this way.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Metasploit
| description | This module exploits a vulnerability in Jenkins dynamic routing to bypass the Overall/Read ACL and leverage Groovy metaprogramming to download and execute a malicious JAR file. When the "Java Dropper" target is selected, the original entry point based on classLoader.parseClass is used, which requires the use of Groovy metaprogramming to achieve RCE. When the "Unix In-Memory" target is selected, a newer, higher-level, and more universal entry point based on GroovyShell.parse is used. This permits the use of in-memory arbitrary command execution. The ACL bypass gadget is specific to Jenkins <= 2.137 and will not work on later versions of Jenkins. Tested against Jenkins 2.137 and Pipeline: Groovy Plugin 2.61. |
| id | MSF:EXPLOIT/MULTI/HTTP/JENKINS_METAPROGRAMMING |
| last seen | 2020-06-14 |
| modified | 2020-04-10 |
| published | 2019-02-23 |
| references |
|
| reporter | Rapid7 |
| source | https://github.com/rapid7/metasploit-framework/blob/master//modules/exploits/multi/http/jenkins_metaprogramming.rb |
| title | Jenkins ACL Bypass and Metaprogramming RCE |
Nessus
| NASL family | CGI abuses |
| NASL id | JENKINS_2_154.NASL |
| description | The version of Jenkins running on the remote web server is prior to 2.154 or is a version of Jenkins LTS prior to 2.138.4 or 2.150.1. It is, therefore, affected by multiple vulnerabilities: - A command execution vulnerability exists in the Stapler web framework used in Jenkins due to certain methods being invoked via crafted URLs. An unauthenticated, remote attacker can exploit this to invoke methods never intended to be invoked in this way, which could potentially lead to command execution. - A denial of service (DoS) vulnerability exists in Jenkins due to a forced migration of user records. An unauthenticated, remote attacker can exploit this issue, via submitting a crafted username to Jenkins login, which could potentially prevent valid users from being able to log in. - An arbitrary file read vulnerability exists in Jenkins due to the workspace browser following symlinks outside the workspace. An attacker could exploit this to read arbitrary files outside of the workspace and disclose sensitive information. - A potential denial of service (DoS) vulnerability exists in Jenkins due to an error in cron expression form validation. An attacker can exploit this issue, via a crafted cron expression, to cause the application to stop responding. Note that Nessus has not tested for these issues but has instead relied only on the application |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 119500 |
| published | 2018-12-07 |
| reporter | This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. |
| source | https://www.tenable.com/plugins/nessus/119500 |
| title | Jenkins < 2.138.4 LTS / 2.150.1 LTS / 2.154 Multiple Vulnerabilities |
| code | |
Redhat
| advisories |
| ||||
| rpms |
|
The Hacker News
| id | THN:66694DD5D9C12B2B7881AB6C960E34DC |
| last seen | 2019-07-25 |
| modified | 2019-07-25 |
| published | 2019-07-25 |
| reporter | The Hacker News |
| source | https://thehackernews.com/2019/07/linux-malware-windows-bluekeep.html |
| title | Linux Botnet Adding BlueKeep-Flawed Windows RDP Servers to Its Target List |