Issued:

2017-08-15

Updated:

2017-08-15

RHSA-2017:2479 - 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.

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)

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

Updated Packages

• mod_ldap-2.4.6-67.el7_4.2.ppc64.rpm
• httpd-tools-2.4.6-67.el7_4.2.s390x.rpm
• mod_ssl-2.4.6-67.el7_4.2.x86_64.rpm
• httpd-debuginfo-2.4.6-67.el7_4.2.ppc64le.rpm
• mod_proxy_html-2.4.6-67.el7_4.2.aarch64.rpm
• mod_proxy_html-2.4.6-67.el7_4.2.ppc64.rpm
• mod_session-2.4.6-67.el7_4.2.ppc64le.rpm
• httpd-debuginfo-2.4.6-67.el7_4.2.x86_64.rpm
• mod_proxy_html-2.4.6-67.el7_4.2.ppc64le.rpm
• httpd-devel-2.4.6-67.el7_4.2.ppc64.rpm
• mod_proxy_html-2.4.6-67.el7_4.2.x86_64.rpm
• httpd-tools-2.4.6-67.el7_4.2.aarch64.rpm
• mod_session-2.4.6-67.el7_4.2.s390x.rpm
• mod_session-2.4.6-67.el7_4.2.x86_64.rpm
• mod_session-2.4.6-67.el7_4.2.ppc64.rpm
• httpd-manual-2.4.6-67.el7_4.2.noarch.rpm
• mod_ssl-2.4.6-67.el7_4.2.ppc64.rpm
• httpd-debuginfo-2.4.6-67.el7_4.2.ppc64.rpm
• mod_ldap-2.4.6-67.el7_4.2.aarch64.rpm
• httpd-2.4.6-67.el7_4.2.aarch64.rpm
• httpd-2.4.6-67.el7_4.2.ppc64le.rpm
• httpd-devel-2.4.6-67.el7_4.2.aarch64.rpm
• httpd-2.4.6-67.el7_4.2.x86_64.rpm
• httpd-tools-2.4.6-67.el7_4.2.ppc64le.rpm
• httpd-2.4.6-67.el7_4.2.ppc64.rpm
• httpd-2.4.6-67.el7_4.2.src.rpm
• httpd-2.4.6-67.el7_4.2.s390x.rpm
• httpd-debuginfo-2.4.6-67.el7_4.2.s390x.rpm
• httpd-devel-2.4.6-67.el7_4.2.s390x.rpm
• httpd-tools-2.4.6-67.el7_4.2.x86_64.rpm
• mod_ldap-2.4.6-67.el7_4.2.x86_64.rpm
• mod_ldap-2.4.6-67.el7_4.2.s390x.rpm
• mod_ssl-2.4.6-67.el7_4.2.aarch64.rpm
• mod_session-2.4.6-67.el7_4.2.aarch64.rpm
• mod_ssl-2.4.6-67.el7_4.2.s390x.rpm
• httpd-tools-2.4.6-67.el7_4.2.ppc64.rpm
• httpd-debuginfo-2.4.6-67.el7_4.2.aarch64.rpm
• httpd-devel-2.4.6-67.el7_4.2.x86_64.rpm
• mod_ldap-2.4.6-67.el7_4.2.ppc64le.rpm
• mod_proxy_html-2.4.6-67.el7_4.2.s390x.rpm
• mod_ssl-2.4.6-67.el7_4.2.ppc64le.rpm
• httpd-devel-2.4.6-67.el7_4.2.ppc64le.rpm

Fixes

• This content is not included.BZ - 1463194
• This content is not included.BZ - 1463197
• This content is not included.BZ - 1463205
• This content is not included.BZ - 1463207
• This content is not included.BZ - 1470748

CVEs

• CVE-2017-3167
• CVE-2017-3169
• CVE-2017-7668
• CVE-2017-7679
• CVE-2017-9788

References

• https://access.redhat.com/security/updates/classification/#important

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.