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

Synopsis:          Important: httpd24-httpd security update
Advisory ID:       RHSA-2016:1420-01
Product:           Red Hat Software Collections
Advisory URL:      https://access.redhat.com/errata/RHSA-2016:1420
Issue date:        2016-07-18
CVE Names:         CVE-2016-4979 CVE-2016-5387 
====================================================================
1. Summary:

An update for httpd24-httpd is now available for Red Hat Software
Collections.

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 Software Collections for Red Hat Enterprise Linux Server (v. 6) - noarch, x86_64
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) - noarch, x86_64
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.6) - noarch, x86_64
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7) - noarch, x86_64
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.1) - noarch, x86_64
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.2) - noarch, x86_64
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) - noarch, x86_64
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64

3. Description:

The httpd packages provide the Apache HTTP Server, a powerful, efficient,
and extensible web server.

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)

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

* A flaw was found in the way httpd performed client authentication using
X.509 client certificates. When the HTTP/2 protocol was enabled, a remote
attacker could use this flaw to access resources protected by certificate
authentication without providing a valid client certificate.
(CVE-2016-4979)

Red Hat would like to thank Scott Geary (VendHQ) for reporting
CVE-2016-5387 and Apache Software Foundation for reporting CVE-2016-4979.
Upstream acknowledges Erki Aring (Liewenthal Electronics Ltd) as the
original reporter of CVE-2016-4979.

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.

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

1352476 - CVE-2016-4979 httpd: X509 client certificate authentication bypass using HTTP/2
1353755 - CVE-2016-5387 Apache HTTPD: sets environmental variable based on user supplied Proxy request header

6. Package List:

Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6):

Source:
httpd24-httpd-2.4.18-11.el6.src.rpm

noarch:
httpd24-httpd-manual-2.4.18-11.el6.noarch.rpm

x86_64:
httpd24-httpd-2.4.18-11.el6.x86_64.rpm
httpd24-httpd-debuginfo-2.4.18-11.el6.x86_64.rpm
httpd24-httpd-devel-2.4.18-11.el6.x86_64.rpm
httpd24-httpd-tools-2.4.18-11.el6.x86_64.rpm
httpd24-mod_ldap-2.4.18-11.el6.x86_64.rpm
httpd24-mod_proxy_html-2.4.18-11.el6.x86_64.rpm
httpd24-mod_session-2.4.18-11.el6.x86_64.rpm
httpd24-mod_ssl-2.4.18-11.el6.x86_64.rpm

Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.6):

Source:
httpd24-httpd-2.4.18-11.el6.src.rpm

noarch:
httpd24-httpd-manual-2.4.18-11.el6.noarch.rpm

x86_64:
httpd24-httpd-2.4.18-11.el6.x86_64.rpm
httpd24-httpd-debuginfo-2.4.18-11.el6.x86_64.rpm
httpd24-httpd-devel-2.4.18-11.el6.x86_64.rpm
httpd24-httpd-tools-2.4.18-11.el6.x86_64.rpm
httpd24-mod_ldap-2.4.18-11.el6.x86_64.rpm
httpd24-mod_proxy_html-2.4.18-11.el6.x86_64.rpm
httpd24-mod_session-2.4.18-11.el6.x86_64.rpm
httpd24-mod_ssl-2.4.18-11.el6.x86_64.rpm

Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7):

Source:
httpd24-httpd-2.4.18-11.el6.src.rpm

noarch:
httpd24-httpd-manual-2.4.18-11.el6.noarch.rpm

x86_64:
httpd24-httpd-2.4.18-11.el6.x86_64.rpm
httpd24-httpd-debuginfo-2.4.18-11.el6.x86_64.rpm
httpd24-httpd-devel-2.4.18-11.el6.x86_64.rpm
httpd24-httpd-tools-2.4.18-11.el6.x86_64.rpm
httpd24-mod_ldap-2.4.18-11.el6.x86_64.rpm
httpd24-mod_proxy_html-2.4.18-11.el6.x86_64.rpm
httpd24-mod_session-2.4.18-11.el6.x86_64.rpm
httpd24-mod_ssl-2.4.18-11.el6.x86_64.rpm

Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6):

Source:
httpd24-httpd-2.4.18-11.el6.src.rpm

noarch:
httpd24-httpd-manual-2.4.18-11.el6.noarch.rpm

x86_64:
httpd24-httpd-2.4.18-11.el6.x86_64.rpm
httpd24-httpd-debuginfo-2.4.18-11.el6.x86_64.rpm
httpd24-httpd-devel-2.4.18-11.el6.x86_64.rpm
httpd24-httpd-tools-2.4.18-11.el6.x86_64.rpm
httpd24-mod_ldap-2.4.18-11.el6.x86_64.rpm
httpd24-mod_proxy_html-2.4.18-11.el6.x86_64.rpm
httpd24-mod_session-2.4.18-11.el6.x86_64.rpm
httpd24-mod_ssl-2.4.18-11.el6.x86_64.rpm

Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7):

Source:
httpd24-httpd-2.4.18-11.el7.src.rpm

noarch:
httpd24-httpd-manual-2.4.18-11.el7.noarch.rpm

x86_64:
httpd24-httpd-2.4.18-11.el7.x86_64.rpm
httpd24-httpd-debuginfo-2.4.18-11.el7.x86_64.rpm
httpd24-httpd-devel-2.4.18-11.el7.x86_64.rpm
httpd24-httpd-tools-2.4.18-11.el7.x86_64.rpm
httpd24-mod_ldap-2.4.18-11.el7.x86_64.rpm
httpd24-mod_proxy_html-2.4.18-11.el7.x86_64.rpm
httpd24-mod_session-2.4.18-11.el7.x86_64.rpm
httpd24-mod_ssl-2.4.18-11.el7.x86_64.rpm

Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.1):

Source:
httpd24-httpd-2.4.18-11.el7.src.rpm

noarch:
httpd24-httpd-manual-2.4.18-11.el7.noarch.rpm

x86_64:
httpd24-httpd-2.4.18-11.el7.x86_64.rpm
httpd24-httpd-debuginfo-2.4.18-11.el7.x86_64.rpm
httpd24-httpd-devel-2.4.18-11.el7.x86_64.rpm
httpd24-httpd-tools-2.4.18-11.el7.x86_64.rpm
httpd24-mod_ldap-2.4.18-11.el7.x86_64.rpm
httpd24-mod_proxy_html-2.4.18-11.el7.x86_64.rpm
httpd24-mod_session-2.4.18-11.el7.x86_64.rpm
httpd24-mod_ssl-2.4.18-11.el7.x86_64.rpm

Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.2):

Source:
httpd24-httpd-2.4.18-11.el7.src.rpm

noarch:
httpd24-httpd-manual-2.4.18-11.el7.noarch.rpm

x86_64:
httpd24-httpd-2.4.18-11.el7.x86_64.rpm
httpd24-httpd-debuginfo-2.4.18-11.el7.x86_64.rpm
httpd24-httpd-devel-2.4.18-11.el7.x86_64.rpm
httpd24-httpd-tools-2.4.18-11.el7.x86_64.rpm
httpd24-mod_ldap-2.4.18-11.el7.x86_64.rpm
httpd24-mod_proxy_html-2.4.18-11.el7.x86_64.rpm
httpd24-mod_session-2.4.18-11.el7.x86_64.rpm
httpd24-mod_ssl-2.4.18-11.el7.x86_64.rpm

Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7):

Source:
httpd24-httpd-2.4.18-11.el7.src.rpm

noarch:
httpd24-httpd-manual-2.4.18-11.el7.noarch.rpm

x86_64:
httpd24-httpd-2.4.18-11.el7.x86_64.rpm
httpd24-httpd-debuginfo-2.4.18-11.el7.x86_64.rpm
httpd24-httpd-devel-2.4.18-11.el7.x86_64.rpm
httpd24-httpd-tools-2.4.18-11.el7.x86_64.rpm
httpd24-mod_ldap-2.4.18-11.el7.x86_64.rpm
httpd24-mod_proxy_html-2.4.18-11.el7.x86_64.rpm
httpd24-mod_session-2.4.18-11.el7.x86_64.rpm
httpd24-mod_ssl-2.4.18-11.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-2016-4979
https://access.redhat.com/security/cve/CVE-2016-5387
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/security/vulnerabilities/httpoxy
https://access.redhat.com/solutions/2435501

8. Contact:

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

Copyright 2016 Red Hat, Inc.
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RedHat: RHSA-2016-1420:01 Important: httpd24-httpd security update

An update for httpd24-httpd is now available for Red Hat Software Collections

Summary

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.
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)
Note: After this update, httpd will no longer pass the value of the Proxy request header to scripts via the HTTP_PROXY environment variable.
* A flaw was found in the way httpd performed client authentication using X.509 client certificates. When the HTTP/2 protocol was enabled, a remote attacker could use this flaw to access resources protected by certificate authentication without providing a valid client certificate. (CVE-2016-4979)
Red Hat would like to thank Scott Geary (VendHQ) for reporting CVE-2016-5387 and Apache Software Foundation for reporting CVE-2016-4979. Upstream acknowledges Erki Aring (Liewenthal Electronics Ltd) as the original reporter of CVE-2016-4979.



Summary


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.

References

https://access.redhat.com/security/cve/CVE-2016-4979 https://access.redhat.com/security/cve/CVE-2016-5387 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/httpoxy https://access.redhat.com/solutions/2435501

Package List

Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6):
Source: httpd24-httpd-2.4.18-11.el6.src.rpm
noarch: httpd24-httpd-manual-2.4.18-11.el6.noarch.rpm
x86_64: httpd24-httpd-2.4.18-11.el6.x86_64.rpm httpd24-httpd-debuginfo-2.4.18-11.el6.x86_64.rpm httpd24-httpd-devel-2.4.18-11.el6.x86_64.rpm httpd24-httpd-tools-2.4.18-11.el6.x86_64.rpm httpd24-mod_ldap-2.4.18-11.el6.x86_64.rpm httpd24-mod_proxy_html-2.4.18-11.el6.x86_64.rpm httpd24-mod_session-2.4.18-11.el6.x86_64.rpm httpd24-mod_ssl-2.4.18-11.el6.x86_64.rpm
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.6):
Source: httpd24-httpd-2.4.18-11.el6.src.rpm
noarch: httpd24-httpd-manual-2.4.18-11.el6.noarch.rpm
x86_64: httpd24-httpd-2.4.18-11.el6.x86_64.rpm httpd24-httpd-debuginfo-2.4.18-11.el6.x86_64.rpm httpd24-httpd-devel-2.4.18-11.el6.x86_64.rpm httpd24-httpd-tools-2.4.18-11.el6.x86_64.rpm httpd24-mod_ldap-2.4.18-11.el6.x86_64.rpm httpd24-mod_proxy_html-2.4.18-11.el6.x86_64.rpm httpd24-mod_session-2.4.18-11.el6.x86_64.rpm httpd24-mod_ssl-2.4.18-11.el6.x86_64.rpm
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7):
Source: httpd24-httpd-2.4.18-11.el6.src.rpm
noarch: httpd24-httpd-manual-2.4.18-11.el6.noarch.rpm
x86_64: httpd24-httpd-2.4.18-11.el6.x86_64.rpm httpd24-httpd-debuginfo-2.4.18-11.el6.x86_64.rpm httpd24-httpd-devel-2.4.18-11.el6.x86_64.rpm httpd24-httpd-tools-2.4.18-11.el6.x86_64.rpm httpd24-mod_ldap-2.4.18-11.el6.x86_64.rpm httpd24-mod_proxy_html-2.4.18-11.el6.x86_64.rpm httpd24-mod_session-2.4.18-11.el6.x86_64.rpm httpd24-mod_ssl-2.4.18-11.el6.x86_64.rpm
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6):
Source: httpd24-httpd-2.4.18-11.el6.src.rpm
noarch: httpd24-httpd-manual-2.4.18-11.el6.noarch.rpm
x86_64: httpd24-httpd-2.4.18-11.el6.x86_64.rpm httpd24-httpd-debuginfo-2.4.18-11.el6.x86_64.rpm httpd24-httpd-devel-2.4.18-11.el6.x86_64.rpm httpd24-httpd-tools-2.4.18-11.el6.x86_64.rpm httpd24-mod_ldap-2.4.18-11.el6.x86_64.rpm httpd24-mod_proxy_html-2.4.18-11.el6.x86_64.rpm httpd24-mod_session-2.4.18-11.el6.x86_64.rpm httpd24-mod_ssl-2.4.18-11.el6.x86_64.rpm
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7):
Source: httpd24-httpd-2.4.18-11.el7.src.rpm
noarch: httpd24-httpd-manual-2.4.18-11.el7.noarch.rpm
x86_64: httpd24-httpd-2.4.18-11.el7.x86_64.rpm httpd24-httpd-debuginfo-2.4.18-11.el7.x86_64.rpm httpd24-httpd-devel-2.4.18-11.el7.x86_64.rpm httpd24-httpd-tools-2.4.18-11.el7.x86_64.rpm httpd24-mod_ldap-2.4.18-11.el7.x86_64.rpm httpd24-mod_proxy_html-2.4.18-11.el7.x86_64.rpm httpd24-mod_session-2.4.18-11.el7.x86_64.rpm httpd24-mod_ssl-2.4.18-11.el7.x86_64.rpm
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.1):
Source: httpd24-httpd-2.4.18-11.el7.src.rpm
noarch: httpd24-httpd-manual-2.4.18-11.el7.noarch.rpm
x86_64: httpd24-httpd-2.4.18-11.el7.x86_64.rpm httpd24-httpd-debuginfo-2.4.18-11.el7.x86_64.rpm httpd24-httpd-devel-2.4.18-11.el7.x86_64.rpm httpd24-httpd-tools-2.4.18-11.el7.x86_64.rpm httpd24-mod_ldap-2.4.18-11.el7.x86_64.rpm httpd24-mod_proxy_html-2.4.18-11.el7.x86_64.rpm httpd24-mod_session-2.4.18-11.el7.x86_64.rpm httpd24-mod_ssl-2.4.18-11.el7.x86_64.rpm
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.2):
Source: httpd24-httpd-2.4.18-11.el7.src.rpm
noarch: httpd24-httpd-manual-2.4.18-11.el7.noarch.rpm
x86_64: httpd24-httpd-2.4.18-11.el7.x86_64.rpm httpd24-httpd-debuginfo-2.4.18-11.el7.x86_64.rpm httpd24-httpd-devel-2.4.18-11.el7.x86_64.rpm httpd24-httpd-tools-2.4.18-11.el7.x86_64.rpm httpd24-mod_ldap-2.4.18-11.el7.x86_64.rpm httpd24-mod_proxy_html-2.4.18-11.el7.x86_64.rpm httpd24-mod_session-2.4.18-11.el7.x86_64.rpm httpd24-mod_ssl-2.4.18-11.el7.x86_64.rpm
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7):
Source: httpd24-httpd-2.4.18-11.el7.src.rpm
noarch: httpd24-httpd-manual-2.4.18-11.el7.noarch.rpm
x86_64: httpd24-httpd-2.4.18-11.el7.x86_64.rpm httpd24-httpd-debuginfo-2.4.18-11.el7.x86_64.rpm httpd24-httpd-devel-2.4.18-11.el7.x86_64.rpm httpd24-httpd-tools-2.4.18-11.el7.x86_64.rpm httpd24-mod_ldap-2.4.18-11.el7.x86_64.rpm httpd24-mod_proxy_html-2.4.18-11.el7.x86_64.rpm httpd24-mod_session-2.4.18-11.el7.x86_64.rpm httpd24-mod_ssl-2.4.18-11.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/


Severity
Advisory ID: RHSA-2016:1420-01
Product: Red Hat Software Collections
Advisory URL: https://access.redhat.com/errata/RHSA-2016:1420
Issued Date: : 2016-07-18
CVE Names: CVE-2016-4979 CVE-2016-5387

Topic

An update for httpd24-httpd is now available for Red Hat SoftwareCollections.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.


Topic


 

Relevant Releases Architectures

Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) - noarch, x86_64

Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) - noarch, x86_64

Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.6) - noarch, x86_64

Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7) - noarch, x86_64

Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.1) - noarch, x86_64

Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.2) - noarch, x86_64

Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) - noarch, x86_64

Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64


Bugs Fixed

1352476 - CVE-2016-4979 httpd: X509 client certificate authentication bypass using HTTP/2

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


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