Synopsis

Critical: firefox security update

Type/Severity

Security Advisory: Critical

Topic

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.

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-2015-0836, CVE-2015-0831, CVE-2015-0827)

An information leak flaw was found in the way Firefox implemented
autocomplete forms. An attacker able to trick a user into specifying a
local file in the form could use this flaw to access the contents of that
file. (CVE-2015-0822)

Red Hat would like to thank the Mozilla project for reporting these issues.
Upstream acknowledges Carsten Book, Christoph Diehl, Gary Kwong, Jan de
Mooij, Liz Henry, Byron Campen, Tom Schuster, Ryan VanderMeulen, Paul
Bandha, Abhishek Arya, and Armin Razmdjou as the original reporters of
these issues.

For technical details regarding these flaws, refer to the Mozilla security
advisories for Firefox 31.5.0 ESR. You can find a link to the Mozilla
advisories in the References section of this erratum.

All Firefox users should upgrade to these updated packages, which contain
Firefox version 31.5.0 ESR, which corrects these issues. After installing
the update, Firefox must be restarted for the changes to take effect.

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the
Red Hat Network to apply this update are available at
https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 7 x86_64
• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Server - Extended Update Support 7.4 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support 7.3 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support 6.6 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support 6.6 i386
• Red Hat Enterprise Linux Server - AUS 6.6 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 7 x86_64
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for IBM z Systems 5 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.4 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.3 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 6.6 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.4 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.3 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 6.6 ppc64
• Red Hat Enterprise Linux for Scientific Computing 7 x86_64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 7 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.6 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.6 i386
• Red Hat Enterprise Linux EUS Compute Node 7.4 x86_64
• Red Hat Enterprise Linux EUS Compute Node 7.3 x86_64
• Red Hat Enterprise Linux EUS Compute Node 6.6 x86_64
• Red Hat Enterprise Linux Server - AUS 7.4 x86_64
• Red Hat Enterprise Linux Server - AUS 7.3 x86_64
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux Server - TUS 7.3 x86_64
• Red Hat Enterprise Linux Server - TUS 6.6 x86_64

Fixes

• BZ - 1195605 - CVE-2015-0836 Mozilla: Miscellaneous memory safety hazards (rv:31.5) (MFSA 2015-11)
• BZ - 1195619 - CVE-2015-0831 Mozilla: Use-after-free in IndexedDB (MFSA 2015-16)
• BZ - 1195623 - CVE-2015-0827 Mozilla: Out-of-bounds read and write while rendering SVG content (MFSA 2015-19)
• BZ - 1195638 - CVE-2015-0822 Mozilla: Reading of local files through manipulation of form autocomplete (MFSA 2015-24)

CVEs

• CVE-2015-0836
• CVE-2015-0827
• CVE-2015-0831
• CVE-2015-0822

References

• https://access.redhat.com/security/updates/classification/#critical
• https://www.mozilla.org/en-US/security/known-vulnerabilities/firefox-esr/#firefoxesr31.5

Red Hat Enterprise Linux Server 5

SRPM
x86_64
firefox-debuginfo-31.5.0-1.el5_11.i386.rpm	SHA-256: 9abefb983af16b4d6186bb56fa273a2276ed44ae0be5d1790aa071c61b8e57b6
i386
firefox-debuginfo-31.5.0-1.el5_11.i386.rpm	SHA-256: 9abefb983af16b4d6186bb56fa273a2276ed44ae0be5d1790aa071c61b8e57b6

Red Hat Enterprise Linux Workstation 5

SRPM
x86_64
firefox-debuginfo-31.5.0-1.el5_11.i386.rpm	SHA-256: 9abefb983af16b4d6186bb56fa273a2276ed44ae0be5d1790aa071c61b8e57b6
i386
firefox-debuginfo-31.5.0-1.el5_11.i386.rpm	SHA-256: 9abefb983af16b4d6186bb56fa273a2276ed44ae0be5d1790aa071c61b8e57b6

Red Hat Enterprise Linux Desktop 5

SRPM
x86_64
firefox-debuginfo-31.5.0-1.el5_11.i386.rpm	SHA-256: 9abefb983af16b4d6186bb56fa273a2276ed44ae0be5d1790aa071c61b8e57b6
i386
firefox-debuginfo-31.5.0-1.el5_11.i386.rpm	SHA-256: 9abefb983af16b4d6186bb56fa273a2276ed44ae0be5d1790aa071c61b8e57b6

Red Hat Enterprise Linux Server from RHUI 5

SRPM
x86_64
firefox-debuginfo-31.5.0-1.el5_11.i386.rpm	SHA-256: 9abefb983af16b4d6186bb56fa273a2276ed44ae0be5d1790aa071c61b8e57b6
i386
firefox-debuginfo-31.5.0-1.el5_11.i386.rpm	SHA-256: 9abefb983af16b4d6186bb56fa273a2276ed44ae0be5d1790aa071c61b8e57b6