Issued:
2020-05-06
Updated:
2020-05-06

RHSA-2020:2037 - Security Advisory

Synopsis

Critical: firefox security update

Type/Severity

Security Advisory: Critical

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Identify and remediate systems affected by this advisory.

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Topic

An update for firefox is now available for Red Hat Enterprise Linux 7.

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 68.8.0 ESR.

Security Fix(es):

  • Mozilla: Use-after-free during worker shutdown (CVE-2020-12387)
  • Mozilla: Memory safety bugs fixed in Firefox 76 and Firefox ESR 68.8 (CVE-2020-12395)
  • Mozilla: Buffer overflow in SCTP chunk input validation (CVE-2020-6831)
  • Mozilla: Arbitrary local file access with 'Copy as cURL' (CVE-2020-12392)

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

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 7 x86_64
  • Red Hat Enterprise Linux Workstation 7 x86_64
  • Red Hat Enterprise Linux Desktop 7 x86_64
  • Red Hat Enterprise Linux for IBM z Systems 7 s390x
  • Red Hat Enterprise Linux for Power, big endian 7 ppc64
  • Red Hat Enterprise Linux for Power, little endian 7 ppc64le

Fixes

  • BZ - 1831761 - CVE-2020-12387 Mozilla: Use-after-free during worker shutdown
  • BZ - 1831763 - CVE-2020-6831 Mozilla: Buffer overflow in SCTP chunk input validation
  • BZ - 1831764 - CVE-2020-12392 Mozilla: Arbitrary local file access with 'Copy as cURL'
  • BZ - 1831765 - CVE-2020-12395 Mozilla: Memory safety bugs fixed in Firefox 76 and Firefox ESR 68.8

Red Hat Enterprise Linux Server 7

SRPM
firefox-68.8.0-1.el7_8.src.rpm SHA-256: 9933ff3f503ec93a9f345d4982dae935ef760f8c72f3696bac5976ce3240af56
x86_64
firefox-68.8.0-1.el7_8.i686.rpm SHA-256: a7831f2894c7251a041429ba12eb0aa246642c90af3e219eb789d5a10353447e
firefox-68.8.0-1.el7_8.x86_64.rpm SHA-256: f9bc7cfd542e68ad02a7df19b8de8f231b57e96ccbd6007def1bf6a475851527
firefox-debuginfo-68.8.0-1.el7_8.i686.rpm SHA-256: cc49b3353b5df144e7629ce335cb85913e75723b08a8dbbf350333bab23e5f37
firefox-debuginfo-68.8.0-1.el7_8.x86_64.rpm SHA-256: 0930ea8c21808f67d4fa5de2f0a3c4822938da61110b2e659cc2db594ba86f99

Red Hat Enterprise Linux Workstation 7

SRPM
firefox-68.8.0-1.el7_8.src.rpm SHA-256: 9933ff3f503ec93a9f345d4982dae935ef760f8c72f3696bac5976ce3240af56
x86_64
firefox-68.8.0-1.el7_8.i686.rpm SHA-256: a7831f2894c7251a041429ba12eb0aa246642c90af3e219eb789d5a10353447e
firefox-68.8.0-1.el7_8.x86_64.rpm SHA-256: f9bc7cfd542e68ad02a7df19b8de8f231b57e96ccbd6007def1bf6a475851527
firefox-debuginfo-68.8.0-1.el7_8.i686.rpm SHA-256: cc49b3353b5df144e7629ce335cb85913e75723b08a8dbbf350333bab23e5f37
firefox-debuginfo-68.8.0-1.el7_8.x86_64.rpm SHA-256: 0930ea8c21808f67d4fa5de2f0a3c4822938da61110b2e659cc2db594ba86f99

Red Hat Enterprise Linux Desktop 7

SRPM
firefox-68.8.0-1.el7_8.src.rpm SHA-256: 9933ff3f503ec93a9f345d4982dae935ef760f8c72f3696bac5976ce3240af56
x86_64
firefox-68.8.0-1.el7_8.i686.rpm SHA-256: a7831f2894c7251a041429ba12eb0aa246642c90af3e219eb789d5a10353447e
firefox-68.8.0-1.el7_8.x86_64.rpm SHA-256: f9bc7cfd542e68ad02a7df19b8de8f231b57e96ccbd6007def1bf6a475851527
firefox-debuginfo-68.8.0-1.el7_8.i686.rpm SHA-256: cc49b3353b5df144e7629ce335cb85913e75723b08a8dbbf350333bab23e5f37
firefox-debuginfo-68.8.0-1.el7_8.x86_64.rpm SHA-256: 0930ea8c21808f67d4fa5de2f0a3c4822938da61110b2e659cc2db594ba86f99

Red Hat Enterprise Linux for IBM z Systems 7

SRPM
firefox-68.8.0-1.el7_8.src.rpm SHA-256: 9933ff3f503ec93a9f345d4982dae935ef760f8c72f3696bac5976ce3240af56
s390x
firefox-68.8.0-1.el7_8.s390x.rpm SHA-256: 4c9eac205373f5f28b35cd222c645222a9fe5abf2e0982c22949d5b72372f9c3
firefox-debuginfo-68.8.0-1.el7_8.s390x.rpm SHA-256: 64baf36055026f080d7a5fdff4fb1bc75fc21693dd6f1f872cb4e4e3a46fb0ff

Red Hat Enterprise Linux for Power, big endian 7

SRPM
firefox-68.8.0-1.el7_8.src.rpm SHA-256: 9933ff3f503ec93a9f345d4982dae935ef760f8c72f3696bac5976ce3240af56
ppc64
firefox-68.8.0-1.el7_8.ppc64.rpm SHA-256: 72fd7edd4871783e04843cab55171869524c87302df5690d2562d9b67ac37d75
firefox-debuginfo-68.8.0-1.el7_8.ppc64.rpm SHA-256: c7300ebe108c7bb3fc4e99cb38f90d6d41a9d4295ed0e9e63bbcf1cdb2c0f2ba

Red Hat Enterprise Linux for Power, little endian 7

SRPM
firefox-68.8.0-1.el7_8.src.rpm SHA-256: 9933ff3f503ec93a9f345d4982dae935ef760f8c72f3696bac5976ce3240af56
ppc64le
firefox-68.8.0-1.el7_8.ppc64le.rpm SHA-256: c271879ac9597add6615129c723876d1463931db2fa68ddb89dd89dd0e8e9caf
firefox-debuginfo-68.8.0-1.el7_8.ppc64le.rpm SHA-256: ec8c5f9474ec1129966094ec0459815fa6a8915647424a836ab3c9311258cd31

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.