-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: httpd security and bug fix update Advisory ID: RHSA-2017:1721-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2017:1721 Issue date: 2017-07-11 CVE Names: CVE-2016-8743 ===================================================================== 1. Summary: An update for httpd is now available for Red Hat Enterprise Linux 6. 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 Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch, x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, 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 the HTTP parser in httpd incorrectly allowed certain characters not permitted by the HTTP protocol specification to appear unencoded in HTTP request headers. If httpd was used in conjunction with a proxy or backend server that interpreted those characters differently, a remote attacker could possibly use this flaw to inject data into HTTP responses, resulting in proxy cache poisoning. (CVE-2016-8743) Note: The fix for the CVE-2016-8743 issue causes httpd to return "400 Bad Request" error to HTTP clients which do not strictly follow HTTP protocol specification. A newly introduced configuration directive "HttpProtocolOptions Unsafe" can be used to re-enable the old less strict parsing. However, such setting also re-introduces the CVE-2016-8743 issue. Note: Administrators of Red Hat Satellite 5 and Red Hat Satellite Proxy 5 systems should consult Red Hat Knowledgebase article 3013361 linked to in the Reference section before installing this update. Bug Fix(es): * Previously, httpd was unable to correctly check a boundary of an array, and in rare cases it attempted to access an element of an array that was out of bounds. Consequently, httpd terminated unexpectedly with a segmentation fault at proxy_util.c. With this update, bounds checking has been fixed, and httpd no longer crashes. (BZ#1463354) 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/): 1406822 - CVE-2016-8743 httpd: Apache HTTP Request Parsing Whitespace Defects 1463354 - segfault in ap_proxy_set_scoreboard_lb 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: httpd-2.2.15-60.el6_9.4.src.rpm i386: httpd-2.2.15-60.el6_9.4.i686.rpm httpd-debuginfo-2.2.15-60.el6_9.4.i686.rpm httpd-tools-2.2.15-60.el6_9.4.i686.rpm x86_64: httpd-2.2.15-60.el6_9.4.x86_64.rpm httpd-debuginfo-2.2.15-60.el6_9.4.x86_64.rpm httpd-tools-2.2.15-60.el6_9.4.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): i386: httpd-debuginfo-2.2.15-60.el6_9.4.i686.rpm httpd-devel-2.2.15-60.el6_9.4.i686.rpm mod_ssl-2.2.15-60.el6_9.4.i686.rpm noarch: httpd-manual-2.2.15-60.el6_9.4.noarch.rpm x86_64: httpd-debuginfo-2.2.15-60.el6_9.4.i686.rpm httpd-debuginfo-2.2.15-60.el6_9.4.x86_64.rpm httpd-devel-2.2.15-60.el6_9.4.i686.rpm httpd-devel-2.2.15-60.el6_9.4.x86_64.rpm mod_ssl-2.2.15-60.el6_9.4.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: httpd-2.2.15-60.el6_9.4.src.rpm x86_64: httpd-2.2.15-60.el6_9.4.x86_64.rpm httpd-debuginfo-2.2.15-60.el6_9.4.x86_64.rpm httpd-tools-2.2.15-60.el6_9.4.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): noarch: httpd-manual-2.2.15-60.el6_9.4.noarch.rpm x86_64: httpd-debuginfo-2.2.15-60.el6_9.4.i686.rpm httpd-debuginfo-2.2.15-60.el6_9.4.x86_64.rpm httpd-devel-2.2.15-60.el6_9.4.i686.rpm httpd-devel-2.2.15-60.el6_9.4.x86_64.rpm mod_ssl-2.2.15-60.el6_9.4.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: httpd-2.2.15-60.el6_9.4.src.rpm i386: httpd-2.2.15-60.el6_9.4.i686.rpm httpd-debuginfo-2.2.15-60.el6_9.4.i686.rpm httpd-devel-2.2.15-60.el6_9.4.i686.rpm httpd-tools-2.2.15-60.el6_9.4.i686.rpm mod_ssl-2.2.15-60.el6_9.4.i686.rpm noarch: httpd-manual-2.2.15-60.el6_9.4.noarch.rpm ppc64: httpd-2.2.15-60.el6_9.4.ppc64.rpm httpd-debuginfo-2.2.15-60.el6_9.4.ppc.rpm httpd-debuginfo-2.2.15-60.el6_9.4.ppc64.rpm httpd-devel-2.2.15-60.el6_9.4.ppc.rpm httpd-devel-2.2.15-60.el6_9.4.ppc64.rpm httpd-tools-2.2.15-60.el6_9.4.ppc64.rpm mod_ssl-2.2.15-60.el6_9.4.ppc64.rpm s390x: httpd-2.2.15-60.el6_9.4.s390x.rpm httpd-debuginfo-2.2.15-60.el6_9.4.s390.rpm httpd-debuginfo-2.2.15-60.el6_9.4.s390x.rpm httpd-devel-2.2.15-60.el6_9.4.s390.rpm httpd-devel-2.2.15-60.el6_9.4.s390x.rpm httpd-tools-2.2.15-60.el6_9.4.s390x.rpm mod_ssl-2.2.15-60.el6_9.4.s390x.rpm x86_64: httpd-2.2.15-60.el6_9.4.x86_64.rpm httpd-debuginfo-2.2.15-60.el6_9.4.i686.rpm httpd-debuginfo-2.2.15-60.el6_9.4.x86_64.rpm httpd-devel-2.2.15-60.el6_9.4.i686.rpm httpd-devel-2.2.15-60.el6_9.4.x86_64.rpm httpd-tools-2.2.15-60.el6_9.4.x86_64.rpm mod_ssl-2.2.15-60.el6_9.4.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: httpd-2.2.15-60.el6_9.4.src.rpm i386: httpd-2.2.15-60.el6_9.4.i686.rpm httpd-debuginfo-2.2.15-60.el6_9.4.i686.rpm httpd-devel-2.2.15-60.el6_9.4.i686.rpm httpd-tools-2.2.15-60.el6_9.4.i686.rpm mod_ssl-2.2.15-60.el6_9.4.i686.rpm noarch: httpd-manual-2.2.15-60.el6_9.4.noarch.rpm x86_64: httpd-2.2.15-60.el6_9.4.x86_64.rpm httpd-debuginfo-2.2.15-60.el6_9.4.i686.rpm httpd-debuginfo-2.2.15-60.el6_9.4.x86_64.rpm httpd-devel-2.2.15-60.el6_9.4.i686.rpm httpd-devel-2.2.15-60.el6_9.4.x86_64.rpm httpd-tools-2.2.15-60.el6_9.4.x86_64.rpm mod_ssl-2.2.15-60.el6_9.4.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-2016-8743 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/articles/3013361 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2017 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFZZTZgXlSAg2UNWIIRAmdtAKCb1+uCNxZKEdVFN8Ohs6S70a97ZwCgrpLu X7emHhZW/Hs3jqMvNGPpHz4= =OM/N -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce