Vulnerabilities > CVE-2018-14667 - Code Injection vulnerability in Redhat Enterprise Linux and Richfaces
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
The RichFaces Framework 3.X through 3.3.4 is vulnerable to Expression Language (EL) injection via the UserResource resource. A remote, unauthenticated attacker could exploit this to execute arbitrary code using a chain of java serialized objects via org.ajax4jsf.resource.UserResource$UriData.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Leverage Executable Code in Non-Executable Files An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
- Manipulating User-Controlled Variables This attack targets user controlled variables (DEBUG=1, PHP Globals, and So Forth). An attacker can override environment variables leveraging user-supplied, untrusted query variables directly used on the application server without any data sanitization. In extreme cases, the attacker can change variables controlling the business logic of the application. For instance, in languages like PHP, a number of poorly set default configurations may allow the user to override variables.
Nessus
| NASL family | Red Hat Local Security Checks |
| NASL id | REDHAT-RHSA-2018-3517.NASL |
| description | An update is now available for Red Hat JBoss Enterprise Application Platform 5 for Red Hat Enterprise Linux 5. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Red Hat JBoss Enterprise Application Platform is a platform for Java applications based on the JBoss Application Server. This asynchronous patch is a security update for the RichFaces package in Red Hat JBoss Enterprise Application Platform 5.2. Security Fix(es) : * RichFaces: Expression Language injection via UserResource allows for unauthenticated remote code execution (CVE-2018-14667) See https://access.redhat.com/solutions/3660371 for specific information regarding this flaw. For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank Joao Filho Matos Figueiredo for reporting this issue. |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 118943 |
| published | 2018-11-14 |
| 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/118943 |
| title | RHEL 6 : JBoss EAP (RHSA-2018:3517) |
| code | |
Packetstorm
| data source | https://packetstormsecurity.com/files/download/150412/richfaces3x-exec.txt |
| id | PACKETSTORM:150412 |
| last seen | 2018-11-21 |
| published | 2018-11-20 |
| reporter | Joao F M Figueiredo |
| source | https://packetstormsecurity.com/files/150412/Richfaces-3.x-Remote-Code-Execution.html |
| title | Richfaces 3.x Remote Code Execution |
Redhat
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References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14667
- https://access.redhat.com/errata/RHSA-2018:3519
- https://access.redhat.com/errata/RHSA-2018:3518
- https://access.redhat.com/errata/RHSA-2018:3517
- http://www.securitytracker.com/id/1042037
- https://access.redhat.com/errata/RHSA-2018:3581
- http://packetstormsecurity.com/files/156663/Richsploit-RichFaces-Exploitation-Toolkit.html
- http://seclists.org/fulldisclosure/2020/Mar/21