RedHat: RHSA-2021-3156:01 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 78.13.0 ESR.
Security Fix(es):
* Mozilla: Uninitialized memory in a canvas object could have led to memory
corruption (CVE-2021-29980)
* Mozilla: Incorrect instruction reordering during JIT optimization
(CVE-2021-29984)
* Mozilla: Race condition when resolving DNS names could have led to memory
corruption (CVE-2021-29986)
* Mozilla: Memory corruption as a result of incorrect style treatment
(CVE-2021-29988)
* Mozilla: Memory safety bugs fixed in Thunderbird 78.13 (CVE-2021-29989)
* Mozilla: Use-after-free media channels (CVE-2021-29985)
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-2021-29980 https://access.redhat.com/security/cve/CVE-2021-29984 https://access.redhat.com/security/cve/CVE-2021-29985 https://access.redhat.com/security/cve/CVE-2021-29986 https://access.redhat.com/security/cve/CVE-2021-29988 https://access.redhat.com/security/cve/CVE-2021-29989 https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Enterprise Linux AppStream EUS (v. 8.2):
Source:
firefox-78.13.0-2.el8_2.src.rpm
aarch64:
firefox-78.13.0-2.el8_2.aarch64.rpm
firefox-debuginfo-78.13.0-2.el8_2.aarch64.rpm
firefox-debugsource-78.13.0-2.el8_2.aarch64.rpm
ppc64le:
firefox-78.13.0-2.el8_2.ppc64le.rpm
firefox-debuginfo-78.13.0-2.el8_2.ppc64le.rpm
firefox-debugsource-78.13.0-2.el8_2.ppc64le.rpm
s390x:
firefox-78.13.0-2.el8_2.s390x.rpm
firefox-debuginfo-78.13.0-2.el8_2.s390x.rpm
firefox-debugsource-78.13.0-2.el8_2.s390x.rpm
x86_64:
firefox-78.13.0-2.el8_2.x86_64.rpm
firefox-debuginfo-78.13.0-2.el8_2.x86_64.rpm
firefox-debugsource-78.13.0-2.el8_2.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 8.2Extended 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. 8.2) - aarch64, ppc64le, s390x, x86_64
Bugs Fixed
1992417 - CVE-2021-29986 Mozilla: Race condition when resolving DNS names could have led to memory corruption
1992419 - CVE-2021-29988 Mozilla: Memory corruption as a result of incorrect style treatment
1992420 - CVE-2021-29984 Mozilla: Incorrect instruction reordering during JIT optimization
1992421 - CVE-2021-29980 Mozilla: Uninitialized memory in a canvas object could have led to memory corruption
1992422 - CVE-2021-29985 Mozilla: Use-after-free media channels
1992423 - CVE-2021-29989 Mozilla: Memory safety bugs fixed in Thunderbird 78.13
