[RHSA-2016:1420-01] Important: httpd24-httpd security update

[news 28]

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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

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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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