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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Critical: firefox security update
Advisory ID:       RHSA-2017:0558-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2017-0558.html
Issue date:        2017-03-17
CVE Names:         CVE-2017-5428 
=====================================================================

1. Summary:

An update for firefox is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Critical. 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 (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

3. Description:

Mozilla Firefox is an open source web browser.

Security Fix(es):

* A flaw was found in the processing of malformed web content. A web page
containing malicious content could cause Firefox to crash or, potentially,
execute arbitrary code with the privileges of the user running Firefox.
(CVE-2017-5428)

Red Hat would like to thank the Mozilla project for reporting this issue.
Upstream acknowledges Chaitin Security Research Lab via Trend Micro's Zero
Day Initiative as the original reporters.

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 update, Firefox must be restarted for the changes to
take effect.

5. Bugs fixed (https://bugzilla.redhat.com/):

1433202 - CVE-2017-5428 Mozilla: integer overflow in createImageBitmap() (MFSA
 2017-08)

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
firefox-52.0-5.el7_3.src.rpm

x86_64:
firefox-52.0-5.el7_3.x86_64.rpm
firefox-debuginfo-52.0-5.el7_3.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

x86_64:
firefox-52.0-5.el7_3.i686.rpm
firefox-debuginfo-52.0-5.el7_3.i686.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
firefox-52.0-5.el7_3.src.rpm

aarch64:
firefox-52.0-5.el7_3.aarch64.rpm
firefox-debuginfo-52.0-5.el7_3.aarch64.rpm

ppc64:
firefox-52.0-5.el7_3.ppc64.rpm
firefox-debuginfo-52.0-5.el7_3.ppc64.rpm

ppc64le:
firefox-52.0-5.el7_3.ppc64le.rpm
firefox-debuginfo-52.0-5.el7_3.ppc64le.rpm

s390x:
firefox-52.0-5.el7_3.s390x.rpm
firefox-debuginfo-52.0-5.el7_3.s390x.rpm

x86_64:
firefox-52.0-5.el7_3.x86_64.rpm
firefox-debuginfo-52.0-5.el7_3.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

ppc64:
firefox-52.0-5.el7_3.ppc.rpm
firefox-debuginfo-52.0-5.el7_3.ppc.rpm

s390x:
firefox-52.0-5.el7_3.s390.rpm
firefox-debuginfo-52.0-5.el7_3.s390.rpm

x86_64:
firefox-52.0-5.el7_3.i686.rpm
firefox-debuginfo-52.0-5.el7_3.i686.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
firefox-52.0-5.el7_3.src.rpm

x86_64:
firefox-52.0-5.el7_3.x86_64.rpm
firefox-debuginfo-52.0-5.el7_3.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

x86_64:
firefox-52.0-5.el7_3.i686.rpm
firefox-debuginfo-52.0-5.el7_3.i686.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-2017-5428
https://access.redhat.com/security/updates/classification/#critical
https://www.mozilla.org/en-US/security/advisories/mfsa2017-08

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2017 Red Hat, Inc.
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