Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 465
Alerts This Week
Warning Icon 1 465

Red Hat: RHSA-2016:2946-01 Critical: Firefox Security Update

red hat
Calendar Grey December 14, 2016
Scroller Redhat
Essential security patch released for Firefox on Red Hat Enterprise Linux distributions, enhancing protection while browsing the web.
An update for firefox is now available for Red Hat Enterprise Linux 5, Red Hat Enterprise Linux 6, and Red Hat Enterprise Linux 7

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.

Summary

Mozilla Firefox is an open source web browser.
This update upgrades Firefox to version 45.6.0 ESR.
Security Fix(es):
* Multiple flaws were 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-2016-9893, CVE-2016-9899, CVE-2016-9895, CVE-2016-9897, CVE-2016-9898, CVE-2016-9900, CVE-2016-9901, CVE-2016-9902, CVE-2016-9904, CVE-2016-9905)
Red Hat would like to thank the Mozilla project for reporting these issues. Upstream acknowledges Philipp, Wladimir Palant, Nils, Jann Horn, Aral, Andrew Krasichkov, insertscript, Jan de Mooij, Iris Hsiao, Christian Holler, Carsten Book, Timothy Nikkel, Christoph Diehl, Olli Pettay, Raymond Forbes, and Boris Zbarsky as the original reporters.

Topics%20covered

Topics Covered

security advisory update Red Hat Enterprise Linux firefox web browser malicious content critical impact

References

https://access.redhat.com/security/cve/CVE-2016-9893 https://access.redhat.com/security/cve/CVE-2016-9895 https://access.redhat.com/security/cve/CVE-2016-9897 https://access.redhat.com/security/cve/CVE-2016-9898 https://access.redhat.com/security/cve/CVE-2016-9899 https://access.redhat.com/security/cve/CVE-2016-9900 https://access.redhat.com/security/cve/CVE-2016-9901 https://access.redhat.com/security/cve/CVE-2016-9902 https://access.redhat.com/security/cve/CVE-2016-9904 https://access.redhat.com/security/cve/CVE-2016-9905 https://access.redhat.com/security/updates/classification/#critical https://www.mozilla.org/en-US/security/known-vulnerabilities/firefox-esr/#firefoxesr45.6

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source: firefox-45.6.0-1.el5_11.src.rpm
i386: firefox-45.6.0-1.el5_11.i386.rpm firefox-debuginfo-45.6.0-1.el5_11.i386.rpm
x86_64: firefox-45.6.0-1.el5_11.i386.rpm firefox-45.6.0-1.el5_11.x86_64.rpm firefox-debuginfo-45.6.0-1.el5_11.i386.rpm firefox-debuginfo-45.6.0-1.el5_11.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source: firefox-45.6.0-1.el5_11.src.rpm
i386: firefox-45.6.0-1.el5_11.i386.rpm firefox-debuginfo-45.6.0-1.el5_11.i386.rpm
ppc: firefox-45.6.0-1.el5_11.ppc64.rpm firefox-debuginfo-45.6.0-1.el5_11.ppc64.rpm
s390x: firefox-45.6.0-1.el5_11.s390.rpm firefox-45.6.0-1.el5_11.s390x.rpm firefox-debuginfo-45.6.0-1.el5_11.s390.rpm firefox-debuginfo-45.6.0-1.el5_11.s390x.rpm
x86_64: firefox-45.6.0-1.el5_11.i386.rpm firefox-45.6.0-1.el5_11.x86_64.rpm firefox-debuginfo-45.6.0-1.el5_11.i386.rpm firefox-debuginfo-45.6.0-1.el5_11.x86_64.rpm
Red Hat Enterprise Linux Desktop (v. 6):
Source: firefox-45.6.0-1.el6_8.src.rpm
i386: firefox-45.6.0-1.el6_8.i686.rpm firefox-debuginfo-45.6.0-1.el6_8.i686.rpm
x86_64: firefox-45.6.0-1.el6_8.x86_64.rpm firefox-debuginfo-45.6.0-1.el6_8.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
x86_64: firefox-45.6.0-1.el6_8.i686.rpm firefox-debuginfo-45.6.0-1.el6_8.i686.rpm


Read the Full Advisory


Severity
critical
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2016:2946-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2016:2946.html
Issue date: 2016-12-14

Topic

An update for firefox is now available for Red Hat Enterprise Linux 5, RedHat Enterprise Linux 6, and Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Critical. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory update Red Hat Enterprise Linux firefox web browser malicious content critical impact

Relevant Releases Architectures

Red Hat Enterprise Linux (v. 5 server) - i386, ppc, s390x, x86_64

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1404083 - CVE-2016-9899 Mozilla: Use-after-free while manipulating DOM events and audio elements (MFSA 2016-94, MFSA 2016-95)

1404086 - CVE-2016-9895 Mozilla: CSP bypass using marquee tag (MFSA 2016-94, MFSA 2016-95)

1404087 - CVE-2016-9897 Mozilla: Memory corruption in libGLES (MFSA 2016-94, MFSA 2016-95)

1404089 - CVE-2016-9898 Mozilla: Use-after-free in Editor while manipulating DOM subtrees (MFSA 2016-94, MFSA 2016-95)

1404090 - CVE-2016-9900 Mozilla: Restricted external resources can be loaded by SVG images through data URLs (MFSA 2016-94, MFSA 2016-95)

1404091 - CVE-2016-9904 Mozilla: Cross-origin information leak in shared atoms (MFSA 2016-94, MFSA 2016-95)

1404094 - CVE-2016-9905 Mozilla: Crash in EnumerateSubDocuments (MFSA 2016-94, MFSA 2016-95)

1404096 - CVE-2016-9893 Mozilla: Memory safety bugs fixed in Firefox 50.1 and Firefox ESR 45.6 (MFSA 2016-95)

1404358 - CVE-2016-9901 Mozilla: Data from Pocket server improperly sanitized before execution (MFSA 2016-94, MFSA 2016-95)

1404359 - CVE-2016-9902 Mozilla: Pocket extension does not validate the origin of events (MFSA 2016-94, MFSA 2016-95)

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.