Topic

An update for firefox is now available for Red Hat Enterprise Linux 6.

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.

Description

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

This update upgrades Firefox to version 52.8.0 ESR.

Security Fix(es):

• Mozilla: Memory safety bugs fixed in Firefox 60 and Firefox ESR 52.8 (CVE-2018-5150)
• Mozilla: Backport critical security fixes in Skia (CVE-2018-5183)
• Mozilla: Use-after-free with SVG animations and clip paths (CVE-2018-5154)
• Mozilla: Use-after-free with SVG animations and text paths (CVE-2018-5155)
• Mozilla: Same-origin bypass of PDF Viewer to view protected PDF files (CVE-2018-5157)
• Mozilla: Malicious PDF can inject JavaScript into PDF Viewer (CVE-2018-5158)
• Mozilla: Integer overflow and out-of-bounds write in Skia (CVE-2018-5159)
• Mozilla: Lightweight themes can be installed without user interaction (CVE-2018-5168)
• Mozilla: Buffer overflow during UTF-8 to Unicode string conversion through legacy extension (CVE-2018-5178)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

Red Hat would like to thank the Mozilla project for reporting these issues. Upstream acknowledges Christoph Diehl, Randell Jesup, Tyson Smith, Alex Gaynor, Ronald Crane, Julian Hector, Kannan Vijayan, Jason Kratzer, Mozilla Developers, Nils, Wladimir Palant, Ivan Fratric, and Root Object as the original reporters.

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.

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x

Fixes

• BZ - 1576250 - CVE-2018-5150 Mozilla: Memory safety bugs fixed in Firefox 60 and Firefox ESR 52.8
• BZ - 1576255 - CVE-2018-5154 Mozilla: Use-after-free with SVG animations and clip paths
• BZ - 1576257 - CVE-2018-5155 Mozilla: Use-after-free with SVG animations and text paths
• BZ - 1576258 - CVE-2018-5157 Mozilla: Same-origin bypass of PDF Viewer to view protected PDF files
• BZ - 1576259 - CVE-2018-5158 Mozilla: Malicious PDF can inject JavaScript into PDF Viewer
• BZ - 1576260 - CVE-2018-5159 Mozilla: Integer overflow and out-of-bounds write in Skia
• BZ - 1576269 - CVE-2018-5168 Mozilla: Lightweight themes can be installed without user interaction
• BZ - 1576278 - CVE-2018-5178 Mozilla: Buffer overflow during UTF-8 to Unicode string conversion through legacy extension
• BZ - 1576283 - CVE-2018-5183 Mozilla: Backport critical security fixes in Skia

CVEs

• CVE-2018-5150
• CVE-2018-5154
• CVE-2018-5155
• CVE-2018-5157
• CVE-2018-5158
• CVE-2018-5159
• CVE-2018-5168
• CVE-2018-5178
• CVE-2018-5183

References

• https://access.redhat.com/security/updates/classification/#critical
• https://www.mozilla.org/en-US/security/advisories/mfsa2018-11/