ELSA-2021-3157: firefox security update

ELSA-2021-3157, released August 17, 2021, fixes 6 CVEs in firefox (version 0:78.13.0-2.0.1.el8_4). None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

8.8

Base score, 0 to 10

Highest EPSS

0.0145

73rd percentile

Priority of the 6 CVEs

Patch now 0
                                Urgent 0
                                High 6
                                Routine 0

Fixed package versions

Product	Release	Fixed in
firefox	ol 8	0:78.13.0-2.0.1.el8_4

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2021-29985	Firefox ESR and 3 others: A use-after-free vulnerability in media channels could have led to memory corruption and a potentially…	8.8	0.0145	None reported
High	CVE-2021-29980	Firefox ESR and 3 others: Uninitialized memory in a canvas object could have caused an incorrect free() leading to memory corruption…	8.8	0.0140	None reported
High	CVE-2021-29984	Firefox ESR and 3 others: Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly…	8.8	0.0139	None reported
High	CVE-2021-29988	Firefox ESR and 3 others: Firefox incorrectly treated an inline list-item element as a block element, resulting in an out of bounds…	8.8	0.0138	None reported
High	CVE-2021-29989	Firefox ESR and 3 others: Mozilla developers reported memory safety bugs present in Firefox 90 and Firefox ESR 78.12.	8.8	0.0127	None reported
High	CVE-2021-29986	firefox: Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This...	8.1	0.0126	None reported

Also fixes CVE-2021-29985

Mozilla Firefox ESR (en-US) 91.0
Mozilla Firefox ESR (en-US)
thunderbird 1:78.13.0+build1-0ubuntu0.18.04.1
thunderbird on Ubuntu 18.04.6 LTS (bionic)
thunderbird 1:78.13.0+build1-0ubuntu0.20.04.2
thunderbird on Ubuntu 20.04 LTS (focal)
thunderbird-gnome-support 1:78.13.0+build1-0ubuntu0.18.04.1
thunderbird-gnome-support on Ubuntu 18.04.6 LTS (bionic)
thunderbird-gnome-support 1:78.13.0+build1-0ubuntu0.20.04.2
thunderbird-gnome-support on Ubuntu 20.04 LTS (focal)
thunderbird-mozsymbols 1:78.13.0+build1-0ubuntu0.18.04.1
thunderbird-mozsymbols on Ubuntu 18.04.6 LTS (bionic)
thunderbird-mozsymbols 1:78.13.0+build1-0ubuntu0.20.04.2
thunderbird-mozsymbols on Ubuntu 20.04 LTS (focal)
xul-ext-calendar-timezones 1:78.13.0+build1-0ubuntu0.18.04.1
xul-ext-calendar-timezones on Ubuntu 18.04.6 LTS (bionic)

Vendor advisory

https://linux.oracle.com/errata/ELSA-2021-3157.html

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