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===================================================================== Red Hat Security Advisory
Synopsis: Important: httpd security update Advisory ID: RHSA-2017:2479-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2017:2479 Issue date: 2017-08-15 CVE Names: CVE-2017-3167 CVE-2017-3169 CVE-2017-7668 CVE-2017-7679 CVE-2017-9788 =====================================================================
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 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 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):
* 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)
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/):
1463194 - CVE-2017-3167 httpd: ap_get_basic_auth_pw() authentication bypass 1463197 - CVE-2017-3169 httpd: mod_ssl NULL pointer dereference 1463205 - CVE-2017-7668 httpd: ap_find_token() buffer overread 1463207 - CVE-2017-7679 httpd: mod_mime buffer overread 1470748 - CVE-2017-9788 httpd: Uninitialized memory reflection in mod_auth_digest
6. Package List:
Red Hat Enterprise Linux Client Optional (v. 7):
Source: httpd-2.4.6-67.el7_4.2.src.rpm
noarch: httpd-manual-2.4.6-67.el7_4.2.noarch.rpm
x86_64: httpd-2.4.6-67.el7_4.2.x86_64.rpm httpd-debuginfo-2.4.6-67.el7_4.2.x86_64.rpm httpd-devel-2.4.6-67.el7_4.2.x86_64.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_proxy_html-2.4.6-67.el7_4.2.x86_64.rpm mod_session-2.4.6-67.el7_4.2.x86_64.rpm mod_ssl-2.4.6-67.el7_4.2.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
Source: httpd-2.4.6-67.el7_4.2.src.rpm
noarch: httpd-manual-2.4.6-67.el7_4.2.noarch.rpm
x86_64: httpd-2.4.6-67.el7_4.2.x86_64.rpm httpd-debuginfo-2.4.6-67.el7_4.2.x86_64.rpm httpd-devel-2.4.6-67.el7_4.2.x86_64.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_proxy_html-2.4.6-67.el7_4.2.x86_64.rpm mod_session-2.4.6-67.el7_4.2.x86_64.rpm mod_ssl-2.4.6-67.el7_4.2.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: httpd-2.4.6-67.el7_4.2.src.rpm
aarch64: httpd-2.4.6-67.el7_4.2.aarch64.rpm httpd-debuginfo-2.4.6-67.el7_4.2.aarch64.rpm httpd-devel-2.4.6-67.el7_4.2.aarch64.rpm httpd-tools-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.aarch64.rpm
noarch: httpd-manual-2.4.6-67.el7_4.2.noarch.rpm
ppc64: httpd-2.4.6-67.el7_4.2.ppc64.rpm httpd-debuginfo-2.4.6-67.el7_4.2.ppc64.rpm httpd-devel-2.4.6-67.el7_4.2.ppc64.rpm httpd-tools-2.4.6-67.el7_4.2.ppc64.rpm mod_session-2.4.6-67.el7_4.2.ppc64.rpm mod_ssl-2.4.6-67.el7_4.2.ppc64.rpm
ppc64le: httpd-2.4.6-67.el7_4.2.ppc64le.rpm httpd-debuginfo-2.4.6-67.el7_4.2.ppc64le.rpm httpd-devel-2.4.6-67.el7_4.2.ppc64le.rpm httpd-tools-2.4.6-67.el7_4.2.ppc64le.rpm mod_session-2.4.6-67.el7_4.2.ppc64le.rpm mod_ssl-2.4.6-67.el7_4.2.ppc64le.rpm
s390x: 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.s390x.rpm mod_session-2.4.6-67.el7_4.2.s390x.rpm mod_ssl-2.4.6-67.el7_4.2.s390x.rpm
x86_64: httpd-2.4.6-67.el7_4.2.x86_64.rpm httpd-debuginfo-2.4.6-67.el7_4.2.x86_64.rpm httpd-devel-2.4.6-67.el7_4.2.x86_64.rpm httpd-tools-2.4.6-67.el7_4.2.x86_64.rpm mod_session-2.4.6-67.el7_4.2.x86_64.rpm mod_ssl-2.4.6-67.el7_4.2.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
aarch64: httpd-debuginfo-2.4.6-67.el7_4.2.aarch64.rpm mod_ldap-2.4.6-67.el7_4.2.aarch64.rpm mod_proxy_html-2.4.6-67.el7_4.2.aarch64.rpm
ppc64: httpd-debuginfo-2.4.6-67.el7_4.2.ppc64.rpm mod_ldap-2.4.6-67.el7_4.2.ppc64.rpm mod_proxy_html-2.4.6-67.el7_4.2.ppc64.rpm
ppc64le: httpd-debuginfo-2.4.6-67.el7_4.2.ppc64le.rpm mod_ldap-2.4.6-67.el7_4.2.ppc64le.rpm mod_proxy_html-2.4.6-67.el7_4.2.ppc64le.rpm
s390x: httpd-debuginfo-2.4.6-67.el7_4.2.s390x.rpm mod_ldap-2.4.6-67.el7_4.2.s390x.rpm mod_proxy_html-2.4.6-67.el7_4.2.s390x.rpm
x86_64: httpd-debuginfo-2.4.6-67.el7_4.2.x86_64.rpm mod_ldap-2.4.6-67.el7_4.2.x86_64.rpm mod_proxy_html-2.4.6-67.el7_4.2.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source: httpd-2.4.6-67.el7_4.2.src.rpm
noarch: httpd-manual-2.4.6-67.el7_4.2.noarch.rpm
x86_64: httpd-2.4.6-67.el7_4.2.x86_64.rpm httpd-debuginfo-2.4.6-67.el7_4.2.x86_64.rpm httpd-devel-2.4.6-67.el7_4.2.x86_64.rpm httpd-tools-2.4.6-67.el7_4.2.x86_64.rpm mod_session-2.4.6-67.el7_4.2.x86_64.rpm mod_ssl-2.4.6-67.el7_4.2.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
x86_64: httpd-debuginfo-2.4.6-67.el7_4.2.x86_64.rpm mod_ldap-2.4.6-67.el7_4.2.x86_64.rpm mod_proxy_html-2.4.6-67.el7_4.2.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-2017-3167 https://access.redhat.com/security/cve/CVE-2017-3169 https://access.redhat.com/security/cve/CVE-2017-7668 https://access.redhat.com/security/cve/CVE-2017-7679 https://access.redhat.com/security/cve/CVE-2017-9788 https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/
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