RHSA-2016:0296 - Security Advisory

Topic

Updated rh-ror41-rubygem-actionpack, rh-ror41-rubygem-actionview,
rh-ror41-rubygem-activemodel, and rh-ror41-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 rh-ror41 collection provides Ruby on Rails version 4.1. Ruby on Rails
is a model-view-controller (MVC) framework for web application development.

The following issue was corrected in rubygem-actionpack and
rubygem-actionview:

A directory traversal 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 to render unexpected files and, possibly, execute arbitrary code.
(CVE-2016-0752)

The following issues were corrected in rubygem-actionpack:

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 Action Pack component's caching of controller
references. An attacker could use this flaw to cause unbounded memory
growth, potentially resulting in a denial of service. (CVE-2015-7581)

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)

The following issue was corrected in rubygem-activemodel and
rubygem-activerecord:

A flaw was found in the way the Active Model based models processed
attributes. An attacker with the ability to pass arbitrary attributes to
models could possibly use this flaw to bypass input validation.
(CVE-2016-0753)

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, Aaron Patterson of Red Hat as the original reporter of
CVE-2016-0751, Daniel Waterworth as the original reporter of CVE-2015-7576,
Justin Coyne as the original reporter of CVE-2015-7577, and John Backus
from BlockScore as the original reporter of CVE-2016-0753.

All rh-ror41 collection rubygem-actionpack, rubygem-actionview,
rubygem-activemodel, 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 rh-ror41
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 - 1301973 - CVE-2016-0753 rubygem-activemodel, rubygem-activerecord: possible input validation circumvention in Active Model
• BZ - 1301981 - CVE-2015-7581 rubygem-actionpack: Object leak vulnerability for wildcard controller routes in Action Pack

CVEs

• CVE-2015-7576
• CVE-2015-7577
• CVE-2016-0752
• CVE-2016-0753
• CVE-2015-7581
• CVE-2016-0751

References

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