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Category:   Application (Web Server/CGI)  >   Apache Tomcat Vendors:   Apache Software Foundation
(Red Hat Issues Fix) Apache Tomcat Bugs Let Remote Users Bypass Security Restrictions, Hijack Sessions, and Obtain Potentially Sensitive Information
SecurityTracker Alert ID:  1037205
SecurityTracker URL:  http://securitytracker.com/id/1037205
CVE Reference:   CVE-2015-5346   (Links to External Site)
Date:  Nov 4 2016
Impact:   Disclosure of system information, Disclosure of user information, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 6.x, 7.x, 8.x, 9.x
Description:   Multiple vulnerabilities were reported in Apache Tomcat. A remote user can bypass security controls on the target system. A remote user can obtain potentially sensitive information on the target system. A remote user can hijack the target user's session.

A remote user can re-use the session ID in a new request to conduct session fixation attacks and potentially hijack a target user's session [CVE-2015-5346]. Systems with an application configured to use the SSL session ID as the HTTP session ID are affected. Versions 7.0.5 to 7.0.65, 8.0.0.RC1 to 8.0.30, and 9.0.0.M1 are affected.

A remote user with access to the Manager or Host Manager applications can obtain a valid CSRF token during a redirect [CVE-2015-5351]. Versions 7.0.1 to 7.0.67, 8.0.0.RC1 to 8.0.31, and 9.0.0.M1 are affected.

An application can load the internal StatusManagerServlet to obtain a list of all deployed applications and a list of the HTTP request lines for all requests currently being processed [CVE-2016-0706]. Systems running untrusted web applications under a security manager are affected. Versions 6.0.0 to 6.0.44, 7.0.0 to 7.0.67, 8.0.0.RC1 to 8.0.30, and 9.0.0.M1 are affected.

A remote user can exploit session persistence mechanisms to bypass the SecurityManager and execute arbitrary code [CVE-2016-0714]. Systems running untrusted web applications under a security manager are affected. Versions 6.0.0 to 6.0.44, 7.0.0 to 7.0.67, 8.0.0.RC1 to 8.0.30, and 9.0.0.M1 are affected.

A web application can access the ResourceLinkFactory.setGlobalContext() public method and inject a malicious global context to disrupt other web applications or read and write data owned by other web applications [CVE-2016-0763]. Systems running untrusted web applications under a security manager are affected. Versions 7.0.0 to 7.0.67, 8.0.0.RC1 to 8.0.30, and 9.0.0.M1 to 9.0.0.M2 are affected.

Impact:   A remote user can bypass security controls on the target system.

A remote user can obtain potentially sensitive information on the target system.

A remote user can hijack the target user's session.

Solution:   Red Hat has issued a fix for CVE-2015-5346.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2016-2046.html

Vendor URL:  rhn.redhat.com/errata/RHSA-2016-2046.html (Links to External Site)
Cause:   Access control error, Input validation error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  7

Message History:   This archive entry is a follow-up to the message listed below.
Feb 22 2016 Apache Tomcat Bugs Let Remote Users Bypass Security Restrictions, Hijack Sessions, and Obtain Potentially Sensitive Information



 Source Message Contents

Subject:  [RHSA-2016:2046-01] Important: tomcat security update

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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: tomcat security update
Advisory ID:       RHSA-2016:2046-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2016-2046.html
Issue date:        2016-10-10
CVE Names:         CVE-2014-7810 CVE-2015-5346 CVE-2016-5388 
                   CVE-2016-5425 CVE-2016-6325 
=====================================================================

1. Summary:

An update for tomcat is 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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client (v. 7) - noarch
Red Hat Enterprise Linux Client Optional (v. 7) - noarch
Red Hat Enterprise Linux ComputeNode (v. 7) - noarch
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch
Red Hat Enterprise Linux Server (v. 7) - noarch
Red Hat Enterprise Linux Server Optional (v. 7) - noarch
Red Hat Enterprise Linux Workstation (v. 7) - noarch
Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch

3. Description:

Apache Tomcat is a servlet container for the Java Servlet and JavaServer
Pages (JSP) technologies.

Security Fix(es):

* It was discovered that the Tomcat packages installed configuration file
/usr/lib/tmpfiles.d/tomcat.conf writeable to the tomcat group. A member of
the group or a malicious web application deployed on Tomcat could use this
flaw to escalate their privileges. (CVE-2016-5425)

* It was discovered that the Tomcat packages installed certain
configuration files read by the Tomcat initialization script as writeable
to the tomcat group. A member of the group or a malicious web application
deployed on Tomcat could use this flaw to escalate their privileges.
(CVE-2016-6325)

* It was found that the expression language resolver evaluated expressions
within a privileged code section. A malicious web application could use
this flaw to bypass security manager protections. (CVE-2014-7810)

* It was discovered that tomcat used the value of the Proxy header from
HTTP requests to initialize the HTTP_PROXY environment variable for CGI
scripts, which in turn was incorrectly used by certain HTTP client
implementations to configure the proxy for outgoing HTTP requests. A remote
attacker could possibly use this flaw to redirect HTTP requests performed
by a CGI script to an attacker-controlled proxy via a malicious HTTP
request. (CVE-2016-5388)

* A session fixation flaw was found in the way Tomcat recycled the
requestedSessionSSL field. If at least one web application was configured
to use the SSL session ID as the HTTP session ID, an attacker could reuse a
previously used session ID for further requests. (CVE-2015-5346)

Red Hat would like to thank Dawid Golunski (http://legalhackers.com) for
reporting CVE-2016-5425 and Scott Geary (VendHQ) for reporting
CVE-2016-5388. The CVE-2016-6325 issue was discovered by Red Hat Product
Security.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1222573 - CVE-2014-7810 Tomcat/JbossWeb: security manager bypass via EL expressions
1311085 - CVE-2015-5346 tomcat: Session fixation
1353809 - CVE-2016-5388 Tomcat: CGI sets environmental variable based on user supplied Proxy request header
1362545 - CVE-2016-5425 tomcat: Local privilege escalation via systemd-tmpfiles service
1367447 - CVE-2016-6325 tomcat: tomcat writable config files allow privilege escalation

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
tomcat-7.0.54-8.el7_2.src.rpm

noarch:
tomcat-servlet-3.0-api-7.0.54-8.el7_2.noarch.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

noarch:
tomcat-7.0.54-8.el7_2.noarch.rpm
tomcat-admin-webapps-7.0.54-8.el7_2.noarch.rpm
tomcat-docs-webapp-7.0.54-8.el7_2.noarch.rpm
tomcat-el-2.2-api-7.0.54-8.el7_2.noarch.rpm
tomcat-javadoc-7.0.54-8.el7_2.noarch.rpm
tomcat-jsp-2.2-api-7.0.54-8.el7_2.noarch.rpm
tomcat-jsvc-7.0.54-8.el7_2.noarch.rpm
tomcat-lib-7.0.54-8.el7_2.noarch.rpm
tomcat-webapps-7.0.54-8.el7_2.noarch.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
tomcat-7.0.54-8.el7_2.src.rpm

noarch:
tomcat-servlet-3.0-api-7.0.54-8.el7_2.noarch.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

noarch:
tomcat-7.0.54-8.el7_2.noarch.rpm
tomcat-admin-webapps-7.0.54-8.el7_2.noarch.rpm
tomcat-docs-webapp-7.0.54-8.el7_2.noarch.rpm
tomcat-el-2.2-api-7.0.54-8.el7_2.noarch.rpm
tomcat-javadoc-7.0.54-8.el7_2.noarch.rpm
tomcat-jsp-2.2-api-7.0.54-8.el7_2.noarch.rpm
tomcat-jsvc-7.0.54-8.el7_2.noarch.rpm
tomcat-lib-7.0.54-8.el7_2.noarch.rpm
tomcat-webapps-7.0.54-8.el7_2.noarch.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
tomcat-7.0.54-8.el7_2.src.rpm

noarch:
tomcat-7.0.54-8.el7_2.noarch.rpm
tomcat-admin-webapps-7.0.54-8.el7_2.noarch.rpm
tomcat-el-2.2-api-7.0.54-8.el7_2.noarch.rpm
tomcat-jsp-2.2-api-7.0.54-8.el7_2.noarch.rpm
tomcat-lib-7.0.54-8.el7_2.noarch.rpm
tomcat-servlet-3.0-api-7.0.54-8.el7_2.noarch.rpm
tomcat-webapps-7.0.54-8.el7_2.noarch.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

noarch:
tomcat-7.0.54-8.el7_2.noarch.rpm
tomcat-admin-webapps-7.0.54-8.el7_2.noarch.rpm
tomcat-docs-webapp-7.0.54-8.el7_2.noarch.rpm
tomcat-el-2.2-api-7.0.54-8.el7_2.noarch.rpm
tomcat-javadoc-7.0.54-8.el7_2.noarch.rpm
tomcat-jsp-2.2-api-7.0.54-8.el7_2.noarch.rpm
tomcat-jsvc-7.0.54-8.el7_2.noarch.rpm
tomcat-lib-7.0.54-8.el7_2.noarch.rpm
tomcat-webapps-7.0.54-8.el7_2.noarch.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
tomcat-7.0.54-8.el7_2.src.rpm

noarch:
tomcat-7.0.54-8.el7_2.noarch.rpm
tomcat-admin-webapps-7.0.54-8.el7_2.noarch.rpm
tomcat-el-2.2-api-7.0.54-8.el7_2.noarch.rpm
tomcat-jsp-2.2-api-7.0.54-8.el7_2.noarch.rpm
tomcat-lib-7.0.54-8.el7_2.noarch.rpm
tomcat-servlet-3.0-api-7.0.54-8.el7_2.noarch.rpm
tomcat-webapps-7.0.54-8.el7_2.noarch.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

noarch:
tomcat-docs-webapp-7.0.54-8.el7_2.noarch.rpm
tomcat-javadoc-7.0.54-8.el7_2.noarch.rpm
tomcat-jsvc-7.0.54-8.el7_2.noarch.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2014-7810
https://access.redhat.com/security/cve/CVE-2015-5346
https://access.redhat.com/security/cve/CVE-2016-5388
https://access.redhat.com/security/cve/CVE-2016-5425
https://access.redhat.com/security/cve/CVE-2016-6325
https://access.redhat.com/security/updates/classification/#important
https://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.59

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2016 Red Hat, Inc.
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