Issued:
2017-11-13
Updated:
2017-11-13

RHSA-2017:3194 - Important: httpd security update

Synopsis

Important: httpd security update

Type/Severity

Security Advisory Important

Topic

An update for httpd is now available for Red Hat Enterprise Linux 7.3 Extended Update Support.

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.

Description

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

Security Fix(es):

  • It was discovered that the httpd's mod_auth_digest module did not properly initialize memory before using it when processing certain headers related to digest authentication. A remote attacker could possibly use this flaw to disclose potentially sensitive information or cause httpd child process to crash by sending specially crafted requests to a server. (CVE-2017-9788)

  • It was discovered that the use of httpd's ap_get_basic_auth_pw() API function outside of the authentication phase could lead to authentication bypass. A remote attacker could possibly use this flaw to bypass required authentication if the API was used incorrectly by one of the modules used by httpd. (CVE-2017-3167)

  • A NULL pointer dereference flaw was found in the httpd's mod_ssl module. A remote attacker could use this flaw to cause an httpd child process to crash if another module used by httpd called a certain API function during the processing of an HTTPS request. (CVE-2017-3169)

  • A buffer over-read flaw was found in the httpd's ap_find_token() function. A remote attacker could use this flaw to cause httpd child process to crash via a specially crafted HTTP request. (CVE-2017-7668)

  • A buffer over-read flaw was found in the httpd's mod_mime module. A user permitted to modify httpd's MIME configuration could use this flaw to cause httpd child process to crash. (CVE-2017-7679)

  • 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 CVE-2017-9798.

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.

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions7.3x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support7.3x86_64
Red Hat Enterprise Linux for Power, little endian - Extended Update Support7.3ppc64le
Red Hat Enterprise Linux for Power, big endian - Extended Update Support7.3ppc64
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support7.3s390x
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions7.3ppc64le
Red Hat Enterprise Linux Server - TUS7.3x86_64
Red Hat Enterprise Linux Server - AUS7.3x86_64
Red Hat Enterprise Linux EUS Compute Node7.3x86_64

Updated Packages

  • httpd-tools-2.4.6-45.el7_3.5.ppc64le.rpm
  • httpd-tools-2.4.6-45.el7_3.5.x86_64.rpm
  • mod_proxy_html-2.4.6-45.el7_3.5.ppc64.rpm
  • httpd-2.4.6-45.el7_3.5.src.rpm
  • httpd-debuginfo-2.4.6-45.el7_3.5.x86_64.rpm
  • httpd-devel-2.4.6-45.el7_3.5.s390x.rpm
  • httpd-debuginfo-2.4.6-45.el7_3.5.ppc64.rpm
  • mod_ldap-2.4.6-45.el7_3.5.x86_64.rpm
  • mod_ssl-2.4.6-45.el7_3.5.x86_64.rpm
  • mod_session-2.4.6-45.el7_3.5.s390x.rpm
  • mod_ssl-2.4.6-45.el7_3.5.ppc64.rpm
  • httpd-2.4.6-45.el7_3.5.ppc64le.rpm
  • mod_session-2.4.6-45.el7_3.5.ppc64.rpm
  • httpd-2.4.6-45.el7_3.5.s390x.rpm
  • httpd-devel-2.4.6-45.el7_3.5.x86_64.rpm
  • httpd-devel-2.4.6-45.el7_3.5.ppc64le.rpm
  • mod_proxy_html-2.4.6-45.el7_3.5.x86_64.rpm
  • mod_ssl-2.4.6-45.el7_3.5.s390x.rpm
  • httpd-debuginfo-2.4.6-45.el7_3.5.s390x.rpm
  • mod_proxy_html-2.4.6-45.el7_3.5.ppc64le.rpm
  • httpd-2.4.6-45.el7_3.5.x86_64.rpm
  • httpd-debuginfo-2.4.6-45.el7_3.5.ppc64le.rpm
  • mod_ldap-2.4.6-45.el7_3.5.ppc64.rpm
  • mod_ldap-2.4.6-45.el7_3.5.s390x.rpm
  • mod_ldap-2.4.6-45.el7_3.5.ppc64le.rpm
  • mod_ssl-2.4.6-45.el7_3.5.ppc64le.rpm
  • mod_session-2.4.6-45.el7_3.5.x86_64.rpm
  • httpd-2.4.6-45.el7_3.5.ppc64.rpm
  • mod_session-2.4.6-45.el7_3.5.ppc64le.rpm
  • httpd-tools-2.4.6-45.el7_3.5.s390x.rpm
  • mod_proxy_html-2.4.6-45.el7_3.5.s390x.rpm
  • httpd-manual-2.4.6-45.el7_3.5.noarch.rpm
  • httpd-devel-2.4.6-45.el7_3.5.ppc64.rpm
  • httpd-tools-2.4.6-45.el7_3.5.ppc64.rpm

Fixes

CVEs

References

Additional information