10 - RHSA-2016:0373

Problem Description:

Updated firefox packages that fix multiple security issues are now available for Red Hat Enterprise Linux 5, 6, and 7.

Red Hat Product Security has rated this update as having Critical 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.

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. XULRunner provides the XUL Runtime environment for Mozilla Firefox.

Several 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-2016-1952, CVE-2016-1954, CVE-2016-1957, CVE-2016-1958, CVE-2016-1960, CVE-2016-1961, CVE-2016-1962, CVE-2016-1973, CVE-2016-1974, CVE-2016-1964, CVE-2016-1965, CVE-2016-1966)

Multiple security flaws were found in the graphite2 font library shipped with Firefox. 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-2016-1977, CVE-2016-2790, CVE-2016-2791, CVE-2016-2792, CVE-2016-2793, CVE-2016-2794, CVE-2016-2795, CVE-2016-2796, CVE-2016-2797, CVE-2016-2798, CVE-2016-2799, CVE-2016-2800, CVE-2016-2801, CVE-2016-2802)

Red Hat would like to thank the Mozilla project for reporting these issues. Upstream acknowledges Bob Clary, Christoph Diehl, Christian Holler, Andrew McCreight, Daniel Holbert, Jesse Ruderman, Randell Jesup, Nicolas Golubovic, Jose Martinez, Romina Santillan, Abdulrahman Alqabandi, ca0nguyen, lokihardt, Dominique Hazaël-Massieux, Nicolas Grégoire, Tsubasa Iinuma, the Communications Electronics Security Group (UK) of the GCHQ, Holger Fuhrmannek, Ronald Crane, and Tyson Smith as the original reporters of these issues.

All Firefox users should upgrade to these updated packages, which contain Firefox version 38.7.0 ESR, which corrects these issues. After installing the update, Firefox must be restarted for the changes to take effect.

4. 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

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

1315566 - CVE-2016-1952 Mozilla: Miscellaneous memory safety hazards (rv:38.7) (MFSA 2016-16) 1315569 - CVE-2016-1954 Mozilla: Local file overwriting and potential privilege escalation through CSP reports (MFSA 2016-17) 1315573 - CVE-2016-1957 Mozilla: Memory leak in libstagefright when deleting an array during MP4 processing (MFSA 2016-20) 1315574 - CVE-2016-1958 Mozilla: Displayed page address can be overridden (MFSA 2016-21) 1315576 - CVE-2016-1960 Mozilla: Use-after-free in HTML5 string parser (MFSA 2016-23) 1315577 - CVE-2016-1961 Mozilla: Use-after-free in SetBody (MFSA 2016-24) 1315578 - CVE-2016-1962 Mozilla: Use-after-free when using multiple WebRTC data channels (MFSA 2016-25) 1315774 - CVE-2016-1964 Mozilla: Use-after-free during XML transformations (MFSA 2016-27) 1315775 - CVE-2016-1965 Mozilla: Addressbar spoofing though history navigation and Location protocol property (MFSA 2016-28) 1315778 - CVE-2016-1966 Mozilla: Memory corruption with malicious NPAPI plugin (MFSA 2016-31) 1315782 - CVE-2016-1973 Mozilla: Use-after-free in GetStaticInstance in WebRTC (MFSA 2016-33) 1315785 - CVE-2016-1974 Mozilla: Out-of-bounds read in HTML parser following a failed allocation (MFSA 2016-34) 1315795 - Mozilla: Font vulnerabilities in the Graphite 2 library (MFSA 2016-37)