RedHat: RHSA-2020-5564:01 Important: firefox security update
Summary
Mozilla Firefox is an open-source web browser, designed for standards
compliance, performance, and portability.
This update upgrades Firefox to version 78.6.0 ESR.
Security Fix(es):
* chromium-browser: Uninitialized Use in V8 (CVE-2020-16042)
* Mozilla: Heap buffer overflow in WebGL (CVE-2020-26971)
* Mozilla: CSS Sanitizer performed incorrect sanitization (CVE-2020-26973)
* Mozilla: Incorrect cast of StyleGenericFlexBasis resulted in a heap
use-after-free (CVE-2020-26974)
* Mozilla: Memory safety bugs fixed in Firefox 84 and Firefox ESR 78.6
(CVE-2020-35113)
* Mozilla: Internal network hosts could have been probed by a malicious
webpage (CVE-2020-26978)
* Mozilla: The proxy.onRequest API did not catch view-source URLs
(CVE-2020-35111)
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.
Summary
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.
References
https://access.redhat.com/security/cve/CVE-2020-16042 https://access.redhat.com/security/cve/CVE-2020-26971 https://access.redhat.com/security/cve/CVE-2020-26973 https://access.redhat.com/security/cve/CVE-2020-26974 https://access.redhat.com/security/cve/CVE-2020-26978 https://access.redhat.com/security/cve/CVE-2020-35111 https://access.redhat.com/security/cve/CVE-2020-35113 https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Enterprise Linux AppStream EUS (v. 8.1):
Source:
firefox-78.6.0-1.el8_1.src.rpm
aarch64:
firefox-78.6.0-1.el8_1.aarch64.rpm
firefox-debuginfo-78.6.0-1.el8_1.aarch64.rpm
firefox-debugsource-78.6.0-1.el8_1.aarch64.rpm
ppc64le:
firefox-78.6.0-1.el8_1.ppc64le.rpm
firefox-debuginfo-78.6.0-1.el8_1.ppc64le.rpm
firefox-debugsource-78.6.0-1.el8_1.ppc64le.rpm
s390x:
firefox-78.6.0-1.el8_1.s390x.rpm
firefox-debuginfo-78.6.0-1.el8_1.s390x.rpm
firefox-debugsource-78.6.0-1.el8_1.s390x.rpm
x86_64:
firefox-78.6.0-1.el8_1.x86_64.rpm
firefox-debuginfo-78.6.0-1.el8_1.x86_64.rpm
firefox-debugsource-78.6.0-1.el8_1.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
Topic
An update for firefox is now available for Red Hat Enterprise Linux 8.1Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux AppStream EUS (v. 8.1) - aarch64, ppc64le, s390x, x86_64
Bugs Fixed
1904515 - CVE-2020-16042 chromium-browser: Uninitialized Use in V8
1908022 - CVE-2020-26971 Mozilla: Heap buffer overflow in WebGL
1908023 - CVE-2020-26973 Mozilla: CSS Sanitizer performed incorrect sanitization
1908024 - CVE-2020-26974 Mozilla: Incorrect cast of StyleGenericFlexBasis resulted in a heap use-after-free
1908025 - CVE-2020-26978 Mozilla: Internal network hosts could have been probed by a malicious webpage
1908027 - CVE-2020-35111 Mozilla: The proxy.onRequest API did not catch view-source URLs
1908029 - CVE-2020-35113 Mozilla: Memory safety bugs fixed in Firefox 84 and Firefox ESR 78.6
