Synopsis

Important: Red Hat JBoss Core Services security update

Type/Severity

Security Advisory: Important

Topic

An update is now available for JBoss Core Services on 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

Red Hat JBoss Core Services is a set of supplementary software for Red Hat JBoss middleware products. This software, such as Apache HTTP Server, is common to multiple JBoss middleware products, and is packaged under Red Hat JBoss Core Services to allow for faster distribution of updates, and for a more consistent update experience.

This release of Red Hat JBoss Core Services Apache HTTP Server 2.4.23 Service Pack 2 serves as an update for Red Hat JBoss Core Services Apache HTTP Server 2.4.23 Service Pack 1, and includes bug fixes, which are documented in the Release Notes document linked to in the References.

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 in httpd 2.4, the internal API function ap_some_auth_required() could incorrectly indicate that a request was authenticated even when no authentication was used. An httpd module using this API function could consequently allow access that should have been denied. (CVE-2015-3185)
• A flaw was found in the way the DES/3DES cipher was used as part of the TLS/SSL protocol. A man-in-the-middle attacker could use this flaw to recover some plaintext data by capturing large amounts of encrypted traffic between TLS/SSL server and client if the communication used a DES/3DES based ciphersuite. (CVE-2016-2183)

Red Hat would like to thank OpenVPN for reporting CVE-2016-2183. Upstream acknowledges Karthikeyan Bhargavan (Inria) and Gaëtan Leurent (Inria) as the original reporters of CVE-2016-2183.

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. For the update to take effect, all services linked to the OpenSSL library must be restarted, or the system rebooted.

Affected Products

• Red Hat JBoss Core Services 1 for RHEL 7 x86_64
• Red Hat JBoss Core Services 1 for RHEL 7 ppc64

Fixes

• BZ - 1243888 - CVE-2015-3185 httpd: ap_some_auth_required() does not properly indicate authenticated request in 2.4
• BZ - 1369383 - CVE-2016-2183 SSL/TLS: Birthday attack against 64-bit block ciphers (SWEET32)
• BZ - 1470748 - CVE-2017-9788 httpd: Uninitialized memory reflection in mod_auth_digest

CVEs

• CVE-2015-3185
• CVE-2016-2183
• CVE-2017-9788

References