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Red Hat Security Advisory 2016-1635-01

Red Hat Security Advisory 2016-1635-01
Posted Aug 21, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-1635-01 - This release of Red Hat JBoss Web Server 3.0.3 Service Pack 1 serves as a update for Red Hat JBoss Web Server 3.0.3 httpd and tomcat. Security Fix: It was discovered that httpd 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.

tags | advisory, remote, web, cgi
systems | linux, redhat
advisories | CVE-2016-5387, CVE-2016-5388
SHA-256 | 963cfb244690288486e0e38ba4462baa8b1b20489ef0ee36f41737f89c6345c3

Red Hat Security Advisory 2016-1635-01

Change Mirror Download

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

Synopsis: Important: Red Hat JBoss Web Server 3.0.3 Service Pack 1 security update
Advisory ID: RHSA-2016:1635-01
Product: Red Hat JBoss Web Server
Advisory URL: https://access.redhat.com/errata/RHSA-2016:1635
Issue date: 2016-07-22
Updated on: 2016-08-18
CVE Names: CVE-2016-5387 CVE-2016-5388
=====================================================================

1. Summary:

Updated packages that provide Red Hat JBoss Web Server 3.0.3 Service Pack 1
and fixes two security issues and a bug with ajp processors 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.

2. Relevant releases/architectures:

Red Hat JBoss Web Server 3.0 for RHEL 7 - noarch, x86_64

3. Description:

This release of Red Hat JBoss Web Server 3.0.3 Service Pack 1 serves as a
update for Red Hat JBoss Web Server 3.0.3 httpd and tomcat.

Security Fix(es):

* It was discovered that httpd 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-2016-5387)

* 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)

Note: After this update, httpd will no longer pass the value of the Proxy
request header to scripts via the HTTP_PROXY environment variable.

Red Hat would like to thank Scott Geary (VendHQ) for reporting these
issues.

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

After installing the updated packages, the httpd daemon will be restarted
automatically.

After installing the updated packages, follow the instructions in this
knowledgebase article to configure Tomcat:

https://access.redhat.com/solutions/2435491

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

1353755 - CVE-2016-5387 Apache HTTPD: sets environmental variable based on user supplied Proxy request header
1353809 - CVE-2016-5388 Tomcat: CGI sets environmental variable based on user supplied Proxy request header

6. Package List:

Red Hat JBoss Web Server 3.0 for RHEL 7:

Source:
httpd24-2.4.6-62.ep7.el7.src.rpm
tomcat7-7.0.59-51_patch_01.ep7.el7.src.rpm
tomcat8-8.0.18-62_patch_01.ep7.el7.src.rpm

noarch:
httpd24-manual-2.4.6-62.ep7.el7.noarch.rpm
tomcat7-7.0.59-51_patch_01.ep7.el7.noarch.rpm
tomcat7-admin-webapps-7.0.59-51_patch_01.ep7.el7.noarch.rpm
tomcat7-docs-webapp-7.0.59-51_patch_01.ep7.el7.noarch.rpm
tomcat7-el-2.2-api-7.0.59-51_patch_01.ep7.el7.noarch.rpm
tomcat7-javadoc-7.0.59-51_patch_01.ep7.el7.noarch.rpm
tomcat7-jsp-2.2-api-7.0.59-51_patch_01.ep7.el7.noarch.rpm
tomcat7-lib-7.0.59-51_patch_01.ep7.el7.noarch.rpm
tomcat7-log4j-7.0.59-51_patch_01.ep7.el7.noarch.rpm
tomcat7-servlet-3.0-api-7.0.59-51_patch_01.ep7.el7.noarch.rpm
tomcat7-webapps-7.0.59-51_patch_01.ep7.el7.noarch.rpm
tomcat8-8.0.18-62_patch_01.ep7.el7.noarch.rpm
tomcat8-admin-webapps-8.0.18-62_patch_01.ep7.el7.noarch.rpm
tomcat8-docs-webapp-8.0.18-62_patch_01.ep7.el7.noarch.rpm
tomcat8-el-2.2-api-8.0.18-62_patch_01.ep7.el7.noarch.rpm
tomcat8-javadoc-8.0.18-62_patch_01.ep7.el7.noarch.rpm
tomcat8-jsp-2.3-api-8.0.18-62_patch_01.ep7.el7.noarch.rpm
tomcat8-lib-8.0.18-62_patch_01.ep7.el7.noarch.rpm
tomcat8-log4j-8.0.18-62_patch_01.ep7.el7.noarch.rpm
tomcat8-servlet-3.1-api-8.0.18-62_patch_01.ep7.el7.noarch.rpm
tomcat8-webapps-8.0.18-62_patch_01.ep7.el7.noarch.rpm

x86_64:
httpd24-2.4.6-62.ep7.el7.x86_64.rpm
httpd24-debuginfo-2.4.6-62.ep7.el7.x86_64.rpm
httpd24-devel-2.4.6-62.ep7.el7.x86_64.rpm
httpd24-tools-2.4.6-62.ep7.el7.x86_64.rpm
mod_ldap24-2.4.6-62.ep7.el7.x86_64.rpm
mod_proxy24_html-2.4.6-62.ep7.el7.x86_64.rpm
mod_session24-2.4.6-62.ep7.el7.x86_64.rpm
mod_ssl24-2.4.6-62.ep7.el7.x86_64.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-2016-5387
https://access.redhat.com/security/cve/CVE-2016-5388
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/documentation/en-US/Red_Hat_JBoss_Web_Server/3/html-single/3.0.3_Release_Notes/index.html
https://access.redhat.com/security/vulnerabilities/httpoxy
https://access.redhat.com/solutions/2435491

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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