CRLF injection vulnerability in the Undertow web server in WildFly 10.0.0, as used in Red Hat JBoss Enterprise Application Platform (EAP) 7.x before 7.0.2, allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via unspecified vectors.

Updated packages that provide Red Hat JBoss Enterprise Application Platform 7.0.2, fix several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. 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 7 is an application server that serves as a middleware platform and is built on open standards and compliant with the Java EE 7 specification.

This release serves as a replacement for Red Hat JBoss Enterprise Application Platform 7.0.1. It includes bug fixes and enhancements.
Refer to the JBoss Enterprise Application Platform 7.0.2 Release Notes linked to in the References section for information about the most significant bug fixes and enhancements included in this release.

Security Fix(es) :

* It was found that the Java Standard Tag Library (JSTL) allowed the processing of untrusted XML documents to utilize external entity references, which could access resources on the host system and, potentially, allowing arbitrary code execution. (CVE-2015-0254)

* It was reported that EAP 7 Application Server/Undertow web server is vulnerable to the injection of arbitrary HTTP headers, and also response splitting, due to insufficient sanitization and validation of user input before the input is used as part of an HTTP header value.
(CVE-2016-4993)

* The domain controller will not propagate its administrative RBAC configuration to some slaves. An attacker could use this to escalate their privileges. (CVE-2016-5406)

Red Hat would like to thank Calum Hutton (NCC Group) and Mikhail Egorov (Odin) for reporting CVE-2016-4993. The CVE-2016-5406 issue was discovered by Tomaz Cerar (Red Hat).

Updated packages that provide Red Hat JBoss Enterprise Application Platform 7.0.2, fix several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. 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 7 is an application server that serves as a middleware platform and is built on open standards and compliant with the Java EE 7 specification.

This release serves as a replacement for Red Hat JBoss Enterprise Application Platform 7.0.1. It includes bug fixes and enhancements.
Refer to the JBoss Enterprise Application Platform 7.0.2 Release Notes linked to in the References section for information about the most significant bug fixes and enhancements included in this release.

Security Fix(es) :

* It was found that the Java Standard Tag Library (JSTL) allowed the processing of untrusted XML documents to utilize external entity references, which could access resources on the host system and, potentially, allowing arbitrary code execution. (CVE-2015-0254)

* It was reported that EAP 7 Application Server/Undertow web server is vulnerable to the injection of arbitrary HTTP headers, and also response splitting, due to insufficient sanitization and validation of user input before the input is used as part of an HTTP header value.
(CVE-2016-4993)

* The domain controller will not propagate its administrative RBAC configuration to some slaves. An attacker could use this to escalate their privileges. (CVE-2016-5406)

Red Hat would like to thank Calum Hutton (NCC Group) and Mikhail Egorov (Odin) for reporting CVE-2016-4993. The CVE-2016-5406 issue was discovered by Tomaz Cerar (Red Hat).

An update for eap7-jboss-ec2-eap is now available for Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 6 and Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 7.

Red Hat Product Security has rated this update as having a security impact of Important. 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.

The eap7-jboss-ec2-eap packages provide scripts for Red Hat JBoss Enterprise Application Platform running on the Amazon Web Services (AWS) Elastic Compute Cloud (EC2).

With this update, the eap7-jboss-ec2-eap package has been updated to ensure compatibility with Red Hat JBoss Enterprise Application Platform 7.0.2. Refer to the JBoss Enterprise Application Platform 7.0.2 Release Notes, linked to in the References section, for information about the most significant bug fixes and enhancements included in this release.

Security Fix(es) :

* It was found that the Java Standard Tag Library (JSTL) allowed the processing of untrusted XML documents to utilize external entity references, which could access resources on the host system and, potentially, allowing arbitrary code execution. (CVE-2015-0254)

* It was reported that EAP 7 Application Server/Undertow web server is vulnerable to the injection of arbitrary HTTP headers, and also response splitting, due to insufficient sanitization and validation of user input before the input is used as part of an HTTP header value.
(CVE-2016-4993)

* The domain controller will not propagate its administrative RBAC configuration to some slaves. An attacker could use this to escalate their privileges. (CVE-2016-5406)

Red Hat would like to thank Calum Hutton (NCC Group) and Mikhail Egorov (Odin) for reporting CVE-2016-4993. The CVE-2016-5406 issue was discovered by Tomaz Cerar (Red Hat).

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:3455 advisory.

  - Apache ActiveMQ Artemis: Deserialization of untrusted input vulnerability (CVE-2016-4978)

  - eap: HTTP header injection / response splitting (CVE-2016-4993)

  - EAP7 Privilege escalation when managing domain including earlier version slaves (CVE-2016-5406)

  - EAP7: Internal IP address disclosed on redirect when request header Host field is not set (CVE-2016-6311)

  - undertow: Long URL proxy request lead to java.nio.BufferOverflowException and DoS (CVE-2016-7046)

  - EAP: Sensitive data can be exposed at the server level in domain mode (CVE-2016-7061)

  - admin-cli: Potential EAP resource starvation DOS attack via GET requests for server log files     (CVE-2016-8627)

  - jboss: jbossas: unsafe chown of server.log in jboss init script allows privilege escalation     (CVE-2016-8656)

  - wildfly: ParseState headerValuesCache can be exploited to fill heap with garbage (CVE-2016-9589)

  - wildfly: Arbitrary file read via path traversal (CVE-2017-2595)

  - undertow: HTTP Request smuggling vulnerability due to permitting invalid characters in HTTP requests     (CVE-2017-2666)

  - undertow: IO thread DoS via unclean Websocket closing (CVE-2017-2670)

  - jackson-databind: Deserialization vulnerability via readValue method of ObjectMapper (CVE-2017-7525)

  - hibernate-validator: Privilege escalation when running under the security manager (CVE-2017-7536)

  - undertow: HTTP Request smuggling vulnerability (incomplete fix of CVE-2017-2666) (CVE-2017-7559)

  - undertow: improper whitespace parsing leading to potential HTTP request smuggling (CVE-2017-12165)

  - EAP-7: Wrong privileges on multiple property files (CVE-2017-12167)

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

An update is now available for Red Hat JBoss Enterprise Application Platform 7.1 for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. 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 release of Red Hat JBoss Enterprise Application Platform 7.1.0 serves as a replacement for Red Hat JBoss Enterprise Application Platform 7.0.0, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References.

Security Fix(es) :

* A Denial of Service can be caused when a long request is sent to EAP 7. (CVE-2016-7046)

* The jboss init script unsafe file handling resulting in local privilege escalation. (CVE-2016-8656)

* A deserialization vulnerability via readValue method of ObjectMapper which allows arbitrary code execution. (CVE-2017-7525)

* JMSObjectMessage deserializes potentially malicious objects allowing Remote Code Execution. (CVE-2016-4978)

* Undertow is vulnerable to the injection of arbitrary HTTP headers, and also response splitting. (CVE-2016-4993)

* The domain controller will not propagate its administrative RBAC configuration to some slaves leading to escalate their privileges.
(CVE-2016-5406)

* Internal IP address disclosed on redirect when request header Host field is not set. (CVE-2016-6311)

* Potential EAP resource starvation DOS attack via GET requests for server log files. (CVE-2016-8627)

* Inefficient Header Cache could cause denial of service.
(CVE-2016-9589)

* The log file viewer allows arbitrary file read to authenticated user via path traversal. (CVE-2017-2595)

* HTTP Request smuggling vulnerability due to permitting invalid characters in HTTP requests. (CVE-2017-2666)

* Websocket non clean close can cause IO thread to get stuck in a loop. (CVE-2017-2670)

* Privilege escalation with security manager's reflective permissions when granted to Hibernate Validator. (CVE-2017-7536)

* Potential http request smuggling as Undertow parses the http headers with unusual whitespaces. (CVE-2017-7559)

* Properties based files of the management and the application realm are world readable allowing access to users and roles information to all the users logged in to the system. (CVE-2017-12167)

* RBAC configuration allows users with a Monitor role to view the sensitive information. (CVE-2016-7061)

* Improper whitespace parsing leading to potential HTTP request smuggling. (CVE-2017-12165)

Red Hat would like to thank Liao Xinxi (NSFOCUS) for reporting CVE-2017-7525; Calum Hutton (NCC Group) and Mikhail Egorov (Odin) for reporting CVE-2016-4993; Luca Bueti for reporting CVE-2016-6311;
Gabriel Lavoie (Halogen Software) for reporting CVE-2016-9589; and Gregory Ramsperger and Ryan Moak for reporting CVE-2017-2670. The CVE-2016-5406 issue was discovered by Tomaz Cerar (Red Hat); the CVE-2016-8627 issue was discovered by Darran Lofthouse (Red Hat) and Brian Stansberry (Red Hat); the CVE-2017-2666 issue was discovered by Radim Hatlapatka (Red Hat); the CVE-2017-7536 issue was discovered by Gunnar Morling (Red Hat); the CVE-2017-7559 and CVE-2017-12165 issues were discovered by Stuart Douglas (Red Hat); and the CVE-2017-12167 issue was discovered by Brian Stansberry (Red Hat) and Jeremy Choi (Red Hat). Upstream acknowledges WildFly as the original reporter of CVE-2016-6311.

The remote Redhat Enterprise Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:3458 advisory.

  - Apache ActiveMQ Artemis: Deserialization of untrusted input vulnerability (CVE-2016-4978)

  - eap: HTTP header injection / response splitting (CVE-2016-4993)

  - EAP7 Privilege escalation when managing domain including earlier version slaves (CVE-2016-5406)

  - EAP7: Internal IP address disclosed on redirect when request header Host field is not set (CVE-2016-6311)

  - undertow: Long URL proxy request lead to java.nio.BufferOverflowException and DoS (CVE-2016-7046)

  - EAP: Sensitive data can be exposed at the server level in domain mode (CVE-2016-7061)

  - admin-cli: Potential EAP resource starvation DOS attack via GET requests for server log files     (CVE-2016-8627)

  - jboss: jbossas: unsafe chown of server.log in jboss init script allows privilege escalation     (CVE-2016-8656)

  - wildfly: ParseState headerValuesCache can be exploited to fill heap with garbage (CVE-2016-9589)

  - wildfly: Arbitrary file read via path traversal (CVE-2017-2595)

  - undertow: HTTP Request smuggling vulnerability due to permitting invalid characters in HTTP requests     (CVE-2017-2666)

  - undertow: IO thread DoS via unclean Websocket closing (CVE-2017-2670)

  - jackson-databind: Deserialization vulnerability via readValue method of ObjectMapper (CVE-2017-7525)

  - hibernate-validator: Privilege escalation when running under the security manager (CVE-2017-7536)

  - undertow: HTTP Request smuggling vulnerability (incomplete fix of CVE-2017-2666) (CVE-2017-7559)

  - undertow: improper whitespace parsing leading to potential HTTP request smuggling (CVE-2017-12165)

  - EAP-7: Wrong privileges on multiple property files (CVE-2017-12167)

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

ID	Name	Product	Family	Severity
112246	RHEL 7 : JBoss EAP (RHSA-2016:1839)	Nessus	Red Hat Local Security Checks	high
112245	RHEL 6 : JBoss EAP (RHSA-2016:1838)	Nessus	Red Hat Local Security Checks	high
112172	RHEL 6 / 7 : eap7-jboss-ec2-eap (RHSA-2016:1840)	Nessus	Red Hat Local Security Checks	high
105269	RHEL 7 : Red Hat JBoss Enterprise Application Platform 7.1.0 (RHSA-2017:3455)	Nessus	Red Hat Local Security Checks	critical
105268	RHEL 6 : JBoss EAP (RHSA-2017:3454)	Nessus	Red Hat Local Security Checks	critical
105252	RHEL 6 / 7 : eap7-jboss-ec2-eap (RHSA-2017:3458)	Nessus	Red Hat Local Security Checks	critical

Detections

Analytics

CVE-2016-4993

medium

Tenable Plugins

high

high

high

critical

critical

critical