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Red Hat Security Advisory

Synopsis: Moderate: httpd security update
Advisory ID: RHSA-2017:2882-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:2882
Issue date: 2017-10-11
CVE Names: CVE-2017-9798
=====================================================================

1. Summary:

An update for httpd is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Moderate. 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 Optional (v. 7) – noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) – noarch, x86_64
Red Hat Enterprise Linux Server (v. 7) – aarch64, noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) – aarch64, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) – noarch, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) – x86_64

3. Description:

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

Security Fix(es):

* A use-after-free flaw was found in the way httpd handled invalid and
previously unregistered HTTP methods specified in the Limit directive used
in an .htaccess file. A remote attacker could possibly use this flaw to
disclose portions of the server memory, or cause httpd child process to
crash. (CVE-2017-9798)

Red Hat would like to thank Hanno Böck for reporting this issue.

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/):

1490344 – CVE-2017-9798 httpd: Use-after-free by limiting unregistered HTTP method (Optionsbleed)

6. Package List:

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

Source:
httpd-2.4.6-67.el7_4.5.src.rpm

noarch:
httpd-manual-2.4.6-67.el7_4.5.noarch.rpm

x86_64:
httpd-2.4.6-67.el7_4.5.x86_64.rpm
httpd-debuginfo-2.4.6-67.el7_4.5.x86_64.rpm
httpd-devel-2.4.6-67.el7_4.5.x86_64.rpm
httpd-tools-2.4.6-67.el7_4.5.x86_64.rpm
mod_ldap-2.4.6-67.el7_4.5.x86_64.rpm
mod_proxy_html-2.4.6-67.el7_4.5.x86_64.rpm
mod_session-2.4.6-67.el7_4.5.x86_64.rpm
mod_ssl-2.4.6-67.el7_4.5.x86_64.rpm

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

Source:
httpd-2.4.6-67.el7_4.5.src.rpm

noarch:
httpd-manual-2.4.6-67.el7_4.5.noarch.rpm

x86_64:
httpd-2.4.6-67.el7_4.5.x86_64.rpm
httpd-debuginfo-2.4.6-67.el7_4.5.x86_64.rpm
httpd-devel-2.4.6-67.el7_4.5.x86_64.rpm
httpd-tools-2.4.6-67.el7_4.5.x86_64.rpm
mod_ldap-2.4.6-67.el7_4.5.x86_64.rpm
mod_proxy_html-2.4.6-67.el7_4.5.x86_64.rpm
mod_session-2.4.6-67.el7_4.5.x86_64.rpm
mod_ssl-2.4.6-67.el7_4.5.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
httpd-2.4.6-67.el7_4.5.src.rpm

aarch64:
httpd-2.4.6-67.el7_4.5.aarch64.rpm
httpd-debuginfo-2.4.6-67.el7_4.5.aarch64.rpm
httpd-devel-2.4.6-67.el7_4.5.aarch64.rpm
httpd-tools-2.4.6-67.el7_4.5.aarch64.rpm
mod_session-2.4.6-67.el7_4.5.aarch64.rpm
mod_ssl-2.4.6-67.el7_4.5.aarch64.rpm

noarch:
httpd-manual-2.4.6-67.el7_4.5.noarch.rpm

ppc64:
httpd-2.4.6-67.el7_4.5.ppc64.rpm
httpd-debuginfo-2.4.6-67.el7_4.5.ppc64.rpm
httpd-devel-2.4.6-67.el7_4.5.ppc64.rpm
httpd-tools-2.4.6-67.el7_4.5.ppc64.rpm
mod_session-2.4.6-67.el7_4.5.ppc64.rpm
mod_ssl-2.4.6-67.el7_4.5.ppc64.rpm

ppc64le:
httpd-2.4.6-67.el7_4.5.ppc64le.rpm
httpd-debuginfo-2.4.6-67.el7_4.5.ppc64le.rpm
httpd-devel-2.4.6-67.el7_4.5.ppc64le.rpm
httpd-tools-2.4.6-67.el7_4.5.ppc64le.rpm
mod_session-2.4.6-67.el7_4.5.ppc64le.rpm
mod_ssl-2.4.6-67.el7_4.5.ppc64le.rpm

s390x:
httpd-2.4.6-67.el7_4.5.s390x.rpm
httpd-debuginfo-2.4.6-67.el7_4.5.s390x.rpm
httpd-devel-2.4.6-67.el7_4.5.s390x.rpm
httpd-tools-2.4.6-67.el7_4.5.s390x.rpm
mod_session-2.4.6-67.el7_4.5.s390x.rpm
mod_ssl-2.4.6-67.el7_4.5.s390x.rpm

x86_64:
httpd-2.4.6-67.el7_4.5.x86_64.rpm
httpd-debuginfo-2.4.6-67.el7_4.5.x86_64.rpm
httpd-devel-2.4.6-67.el7_4.5.x86_64.rpm
httpd-tools-2.4.6-67.el7_4.5.x86_64.rpm
mod_session-2.4.6-67.el7_4.5.x86_64.rpm
mod_ssl-2.4.6-67.el7_4.5.x86_64.rpm

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

aarch64:
httpd-debuginfo-2.4.6-67.el7_4.5.aarch64.rpm
mod_ldap-2.4.6-67.el7_4.5.aarch64.rpm
mod_proxy_html-2.4.6-67.el7_4.5.aarch64.rpm

ppc64:
httpd-debuginfo-2.4.6-67.el7_4.5.ppc64.rpm
mod_ldap-2.4.6-67.el7_4.5.ppc64.rpm
mod_proxy_html-2.4.6-67.el7_4.5.ppc64.rpm

ppc64le:
httpd-debuginfo-2.4.6-67.el7_4.5.ppc64le.rpm
mod_ldap-2.4.6-67.el7_4.5.ppc64le.rpm
mod_proxy_html-2.4.6-67.el7_4.5.ppc64le.rpm

s390x:
httpd-debuginfo-2.4.6-67.el7_4.5.s390x.rpm
mod_ldap-2.4.6-67.el7_4.5.s390x.rpm
mod_proxy_html-2.4.6-67.el7_4.5.s390x.rpm

x86_64:
httpd-debuginfo-2.4.6-67.el7_4.5.x86_64.rpm
mod_ldap-2.4.6-67.el7_4.5.x86_64.rpm
mod_proxy_html-2.4.6-67.el7_4.5.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
httpd-2.4.6-67.el7_4.5.src.rpm

noarch:
httpd-manual-2.4.6-67.el7_4.5.noarch.rpm

x86_64:
httpd-2.4.6-67.el7_4.5.x86_64.rpm
httpd-debuginfo-2.4.6-67.el7_4.5.x86_64.rpm
httpd-devel-2.4.6-67.el7_4.5.x86_64.rpm
httpd-tools-2.4.6-67.el7_4.5.x86_64.rpm
mod_session-2.4.6-67.el7_4.5.x86_64.rpm
mod_ssl-2.4.6-67.el7_4.5.x86_64.rpm

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

x86_64:
httpd-debuginfo-2.4.6-67.el7_4.5.x86_64.rpm
mod_ldap-2.4.6-67.el7_4.5.x86_64.rpm
mod_proxy_html-2.4.6-67.el7_4.5.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-2017-9798
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2017 Red Hat, Inc.
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