9.3 - RHSA-2016:0460

Problem Description:

An updated thunderbird package that fixes multiple security issues is now available for Red Hat Enterprise Linux 5, 6, and 7.

Red Hat Product Security has rated this update as having Important 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 Client (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 Optional Productivity Applications (v. 5 server) - i386, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64le, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64

3. Description:

Mozilla Thunderbird is a standalone mail and newsgroup client.

Several flaws were found in the processing of malformed web content. A web page containing malicious content could cause Thunderbird to crash or, potentially, execute arbitrary code with the privileges of the user running Thunderbird. (CVE-2016-1952, CVE-2016-1954, CVE-2016-1957, CVE-2016-1960, CVE-2016-1961, CVE-2016-1974, CVE-2016-1964, CVE-2016-1966)

Multiple security flaws were found in the graphite2 font library shipped with Thunderbird. A web page containing malicious content could cause Thunderbird to crash or, potentially, execute arbitrary code with the privileges of the user running Thunderbird. (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, ca0nguyen, lokihardt, Nicolas Grégoire, the Communications Electronics Security Group (UK) of the GCHQ, Holger Fuhrmannek, Ronald Crane, and Tyson Smith as the original reporters of these issues.

For technical details regarding these flaws, refer to the Mozilla security advisories for Thunderbird 38.7.0. You can find a link to the Mozilla advisories in the References section of this erratum.

All Thunderbird users should upgrade to this updated package, which contains Thunderbird version 38.7.0, which corrects these issues. After installing the update, Thunderbird 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) 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) 1315774 - CVE-2016-1964 Mozilla: Use-after-free during XML transformations (MFSA 2016-27) 1315778 - CVE-2016-1966 Mozilla: Memory corruption with malicious NPAPI plugin (MFSA 2016-31) 1315785 - CVE-2016-1974 Mozilla: Out-of-bounds read in HTML parser following a failed allocation (MFSA 2016-34) 1315795 - graphite2: multiple font parsing vulnerabilities (Mozilla MFSA 2016-37)