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Category:   Application (Web Browser)  >   Mozilla Firefox Vendors:   Mozilla.org
(Red Hat Issues Fix) Mozilla Firefox Multiple Bugs Let Remote Users Spoof the Address Bar, Bypass Security Restrictions, and Execute Arbitrary Code
SecurityTracker Alert ID:  1041645
SecurityTracker URL:  http://securitytracker.com/id/1041645
CVE Reference:   CVE-2017-16541, CVE-2018-12376, CVE-2018-12377, CVE-2018-12378, CVE-2018-12379   (Links to External Site)
Date:  Sep 12 2018
Impact:   Execution of arbitrary code via network, Modification of system information, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   Multiple vulnerabilities were reported in Mozilla Firefox. A remote user can cause arbitrary code to be executed on the target user's system. A remote user can bypass security controls on the target system. A remote user can spoof the address bar.

A remote user can use a 'javascript:' URI with JavaScript to insert text before the domain name to spoof the address bar [CVE-2018-12382]. Firefox for Android is affected.

A remote user can create specially crafted content that, when loaded by the target user, will execute arbitrary code on the target user's system.

A use-after-free memory error may occur in certain cases when refresh driver timers are refreshed [CVE-2018-12377].

A use-after-free memory error may occur when an IndexedDB index is deleted while still in use [CVE-2018-12378].

An out-of-bounds memory write error may occur when the Mozilla Updater opens a MAR format file that contains a very long item filename [CVE-2018-12379].

When the automount feature with autofs is used to create a mount point on the local file system, content can be loaded from this file system using a 'file:' URI without being processed via the proxy settings [CVE-2017-16541]. macOS is affected. Linux-based systems with autofs installed are also affected.

When the target user drags and drops an Outlook email message into the browser, a page navigation may occur [CVE-2018-12381]. Windows-based systems with Outlook installed are affected.

When a master password is set after version 58.0, unencrypted passwords are not deleted [CVE-2018-12383].

Other memory safety errors may occur [CVE-2018-12375, CVE-2018-12376].

Alex Gaynor, Andrei Cristian Petcu, Bogdan Tara, Boris Zbarsky, Christian Holler, Christoph Diehl, Filippo Cavallarin, Gary Kwong, Holger Fuhrmannek, Jana Squires, Jason Kratzer, Jed Davis, Jesse Ruderman, Jordi Chancel, Jurgen Gaeremyn, Karl Tomlinson, Looben Yang, Mats Palmgren, Nicolas Grunbaum, Nika Layzell, Nils, Sebastian Hengst, Ted Campbell, Tyson Smith, and Zhanjia Song reported these vulnerabilities.

Impact:   A remote user can create content that, when loaded by the target user, will execute arbitrary code on the target user's system.

A remote user can bypass security controls on the target system.

A remote user can spoof the address bar.

Solution:   Red Hat has issued a fix for CVE-2017-16541, CVE-2018-12376, CVE-2018-12377, CVE-2018-12378, and CVE-2018-12379.

The Red Hat advisories are available at:

https://access.redhat.com/errata/RHSA-2018:2692
https://access.redhat.com/errata/RHSA-2018:2693

Vendor URL:  access.redhat.com/errata/RHSA-2018:2692 (Links to External Site)
Cause:   Access control error, Input validation error, State error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  6, 7

Message History:   This archive entry is a follow-up to the message listed below.
Sep 7 2018 Mozilla Firefox Multiple Bugs Let Remote Users Spoof the Address Bar, Bypass Security Restrictions, and Execute Arbitrary Code



 Source Message Contents

Subject:  [RHSA-2018:2692-01] Critical: firefox security update

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

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

Synopsis:          Critical: firefox security update
Advisory ID:       RHSA-2018:2692-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2018:2692
Issue date:        2018-09-12
CVE Names:         CVE-2017-16541 CVE-2018-12376 CVE-2018-12377 
                   CVE-2018-12378 CVE-2018-12379 
=====================================================================

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) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, ppc64le, s390x

3. Description:

Mozilla Firefox is an open-source web browser, designed for standards
compliance, performance, and portability.

This update upgrades Firefox to version 60.2.0 ESR.

Security Fix(es):

* Mozilla: Memory safety bugs fixed in Firefox 62 and Firefox ESR 60.2
(CVE-2018-12376)

* Mozilla: Use-after-free in driver timers (CVE-2018-12377)

* Mozilla: Use-after-free in IndexedDB (CVE-2018-12378)

* Mozilla: Proxy bypass using automount and autofs (CVE-2017-16541)

* Mozilla: Out-of-bounds write with malicious MAR file (CVE-2018-12379)

For more details about the security issue(s), including the impact, a CVSS
score, and other related information, refer to the CVE page(s) listed in
the References section.

Red Hat would like to thank the Mozilla project for reporting these issues.
Upstream acknowledges Alex Gaynor, Boris Zbarsky, Christoph Diehl,
Christian Holler, Jason Kratzer, Jed Davis, Tyson Smith, Bogdan Tara, Karl
Tomlinson, Mats Palmgren, Nika Layzell, Ted Campbell, Nils, Zhanjia Song,
and Holger Fuhrmannek 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/):

1510816 - CVE-2017-16541 Mozilla: Proxy bypass using automount and autofs
1625525 - CVE-2018-12376 Mozilla: Memory safety bugs fixed in Firefox 62 and Firefox ESR 60.2
1625526 - CVE-2018-12377 Mozilla: Use-after-free in driver timers
1625527 - CVE-2018-12378 Mozilla: Use-after-free in IndexedDB
1625528 - CVE-2018-12379 Mozilla: Out-of-bounds write with malicious MAR file

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
firefox-60.2.0-1.el7_5.src.rpm

x86_64:
firefox-60.2.0-1.el7_5.x86_64.rpm
firefox-debuginfo-60.2.0-1.el7_5.x86_64.rpm

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

x86_64:
firefox-60.2.0-1.el7_5.i686.rpm
firefox-debuginfo-60.2.0-1.el7_5.i686.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
firefox-60.2.0-1.el7_5.src.rpm

ppc64:
firefox-60.2.0-1.el7_5.ppc64.rpm
firefox-debuginfo-60.2.0-1.el7_5.ppc64.rpm

ppc64le:
firefox-60.2.0-1.el7_5.ppc64le.rpm
firefox-debuginfo-60.2.0-1.el7_5.ppc64le.rpm

s390x:
firefox-60.2.0-1.el7_5.s390x.rpm
firefox-debuginfo-60.2.0-1.el7_5.s390x.rpm

x86_64:
firefox-60.2.0-1.el7_5.x86_64.rpm
firefox-debuginfo-60.2.0-1.el7_5.x86_64.rpm

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7):

Source:
firefox-60.2.0-1.el7_5.src.rpm

aarch64:
firefox-60.2.0-1.el7_5.aarch64.rpm
firefox-debuginfo-60.2.0-1.el7_5.aarch64.rpm

ppc64le:
firefox-60.2.0-1.el7_5.ppc64le.rpm
firefox-debuginfo-60.2.0-1.el7_5.ppc64le.rpm

s390x:
firefox-60.2.0-1.el7_5.s390x.rpm
firefox-debuginfo-60.2.0-1.el7_5.s390x.rpm

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

x86_64:
firefox-60.2.0-1.el7_5.i686.rpm
firefox-debuginfo-60.2.0-1.el7_5.i686.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
firefox-60.2.0-1.el7_5.src.rpm

x86_64:
firefox-60.2.0-1.el7_5.x86_64.rpm
firefox-debuginfo-60.2.0-1.el7_5.x86_64.rpm

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

x86_64:
firefox-60.2.0-1.el7_5.i686.rpm
firefox-debuginfo-60.2.0-1.el7_5.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-2017-16541
https://access.redhat.com/security/cve/CVE-2018-12376
https://access.redhat.com/security/cve/CVE-2018-12377
https://access.redhat.com/security/cve/CVE-2018-12378
https://access.redhat.com/security/cve/CVE-2018-12379
https://access.redhat.com/security/updates/classification/#critical
https://www.mozilla.org/en-US/security/advisories/mfsa2018-20/

8. Contact:

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

Copyright 2018 Red Hat, Inc.
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