7.5 - RHSA-2016:1551

Problem Description:

An update for firefox is now available for Red Hat Enterprise Linux 5, Red Hat Enterprise Linux 6, and 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 (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) - 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

3. Description:

Mozilla Firefox is an open source web browser.

This update upgrades Firefox to version 45.3.0 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-2016-2836, CVE-2016-5258, CVE-2016-5259, CVE-2016-5252, CVE-2016-5263, CVE-2016-2830, CVE-2016-2838, CVE-2016-5254, CVE-2016-5262, CVE-2016-5264, CVE-2016-5265, CVE-2016-2837)

Red Hat would like to thank the Mozilla project for reporting these issues. Upstream acknowledges Looben Yang, Carsten Book, Christian Holler, Gary Kwong, Jesse Ruderman, Andrew McCreight, Phil Ringnalda, Philipp, Toni Huttunen, Georg Koppen, Abhishek Arya, Atte Kettunen, Nils, Nikita Arykov, and Abdulrahman Alqabandi 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/):

1342897 - CVE-2016-2830 Mozilla: Favicon network connection persists when page is closed (MFSA 2016-62) 1361974 - CVE-2016-2836 Mozilla: Miscellaneous memory safety hazards (rv:45.3) (MFSA 2016-62) 1361976 - CVE-2016-2838 Mozilla: Buffer overflow rendering SVG with bidirectional content (MFSA 2016-64) 1361979 - CVE-2016-5252 Mozilla: Stack underflow during 2D graphics rendering (MFSA 2016-67) 1361980 - CVE-2016-5254 Mozilla: Use-after-free when using alt key and toplevel menus (MFSA 2016-70) 1361982 - CVE-2016-5258 Mozilla: Use-after-free in DTLS during WebRTC session shutdown (MFSA 2016-72) 1361984 - CVE-2016-5259 Mozilla: Use-after-free in service workers with nested sync events (MFSA 2016-73) 1361987 - CVE-2016-5262 Mozilla: Scripts on marquee tag can execute in sandboxed iframes (MFSA 2016-76) 1361989 - CVE-2016-2837 Mozilla: Buffer overflow in ClearKey Content Decryption Module (CDM) during video playback (MFSA 2016-77) 1361991 - CVE-2016-5263 Mozilla: Type confusion in display transformation (MFSA 2016-78) 1361992 - CVE-2016-5264 Mozilla: Use-after-free when applying SVG effects (MFSA 2016-79) 1361994 - CVE-2016-5265 Mozilla: Same-origin policy violation using local HTML file and saved shortcut file (MFSA 2016-80)