RHSA-2016:0455 - Security Advisory

Topic

Updated ruby193-rubygem-actionpack and ruby193-rubygem-activerecord
packages that fix multiple security issues are now available for Red Hat
Software Collections.

Red Hat Product Security has rated this update as having Important security
impact. Common Vulnerability Scoring System (CVSS) base scores, which give
detailed severity ratings, are available for each vulnerability from the
CVE links in the References section.

Description

The ruby193 collection provides Ruby version 1.9.3 and Ruby on Rails
version 3.2. Ruby on Rails is a model-view-controller (MVC) framework for
web application development.

The following issues were corrected in rubygem-actionpack:

Multiple directory traversal flaws were found in the way the Action View
component searched for templates for rendering. If an application passed
untrusted input to the 'render' method, a remote, unauthenticated attacker
could use these flaws to render unexpected files and, possibly, execute
arbitrary code. (CVE-2016-0752, CVE-2016-2097)

A code injection flaw was found in the way the Action View component
searched for templates for rendering. If an application passed untrusted
input to the 'render' method, a remote, unauthenticated attacker could use
this flaw to execute arbitrary code. (CVE-2016-2098)

A flaw was found in the way the Action Pack component performed MIME type
lookups. Since queries were cached in a global cache of MIME types, an
attacker could use this flaw to grow the cache indefinitely, potentially
resulting in a denial of service. (CVE-2016-0751)

A flaw was found in the way the Action Controller component compared user
names and passwords when performing HTTP basic authentication. Time taken
to compare strings could differ depending on input, possibly allowing a
remote attacker to determine valid user names and passwords using a timing
attack. (CVE-2015-7576)

The following issue was corrected in rubygem-activerecord:

A flaw was found in the Active Record component's handling of nested
attributes in combination with the destroy flag. An attacker could possibly
use this flaw to set attributes to invalid values or clear all attributes.
(CVE-2015-7577)

Red Hat would like to thank the Ruby on Rails project for reporting these
issues. Upstream acknowledges John Poulin as the original reporter of
CVE-2016-0752, Jyoti Singh and Tobias Kraze (makandra) as original
reporters of CVE-2016-2097, Tobias Kraze (makandra) and joernchen
(Phenoelit) as original reporters of CVE-2016-2098, Aaron Patterson (Red
Hat) as the original reporter of CVE-2016-0751, Daniel Waterworth as the
original reporter of CVE-2015-7576, and Justin Coyne as the original
reporter of CVE-2015-7577.

All ruby193 collection rubygem-actionpack and rubygem-activerecord packages
users are advised to upgrade to these updated packages, which contain
backported patches to correct these issues. All running applications using
the ruby193 collection must be restarted for this update to take effect.

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.7 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.6 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.5 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.4 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.3 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.2 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.1 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 6.7 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 6.6 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 6 x86_64
• Red Hat Software Collections (for RHEL Workstation) 1 for RHEL 7 x86_64
• Red Hat Software Collections (for RHEL Workstation) 1 for RHEL 6 x86_64
• Red Hat Software Collections (for RHEL Server) from RHUI 1 for RHEL 7 x86_64
• Red Hat Software Collections (for RHEL Server) from RHUI 1 for RHEL 6 x86_64

Fixes

• BZ - 1301933 - CVE-2015-7576 rubygem-actionpack: Timing attack vulnerability in basic authentication in Action Controller
• BZ - 1301946 - CVE-2016-0751 rubygem-actionpack: possible object leak and denial of service attack in Action Pack
• BZ - 1301957 - CVE-2015-7577 rubygem-activerecord: Nested attributes rejection proc bypass in Active Record
• BZ - 1301963 - CVE-2016-0752 rubygem-actionview, rubygem-actionpack: directory traversal flaw in Action View
• BZ - 1310043 - CVE-2016-2097 rubygem-actionview, rubygem-actionpack: directory traversal in Action View, incomplete CVE-2016-0752 fix
• BZ - 1310054 - CVE-2016-2098 rubygem-actionview, rubygem-actionpack: code injection vulnerability in Action View

CVEs

• CVE-2015-7576
• CVE-2015-7577
• CVE-2016-0752
• CVE-2016-0751
• CVE-2016-2098
• CVE-2016-2097

References

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