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 60.5.0 ESR.

Security Fix(es):

• Mozilla: Use-after-free parsing HTML5 stream (CVE-2018-18500)
• Mozilla: Memory safety bugs fixed in Firefox 65 and Firefox ESR 60.5 (CVE-2018-18501)
• Mozilla: Privilege escalation through IPC channel messages (CVE-2018-18505)

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 Yaniv Frank (SophosLabs), Alex Gaynor, Christoph Diehl, Steven Crane, Jason Kratzer, Gary Kwong, Christian Holler, and Jed Davis 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 - 1670631 - CVE-2018-18500 Mozilla: Use-after-free parsing HTML5 stream
• BZ - 1670632 - CVE-2018-18501 Mozilla: Memory safety bugs fixed in Firefox 65 and Firefox ESR 60.5
• BZ - 1670633 - CVE-2018-18505 Mozilla: Privilege escalation through IPC channel messages

CVEs

• CVE-2018-18500
• CVE-2018-18501
• CVE-2018-18505

References

• https://access.redhat.com/security/updates/classification/#critical