RLSA-2022:0818: firefox security update

RLSA-2022:0818, released March 10, 2022, fixes 10 CVEs in firefox (version 0:91.7.0-3.el8_5). 2 of them are being exploited (CVE-2022-26485); 2 on CISA KEV. Patch Radar priority: Patch now.

Patch now2 on CISA KEV

CVEs closed

7 rated Critical

Exploited

CVE-2022-26485

Highest CVSS

9.8

Base score, 0 to 10

Highest EPSS

0.3527

98th percentile

Priority of the 10 CVEs

Patch now 2
                                Urgent 5
                                High 3
                                Routine 0

Fixed package versions

Product	Release	Fixed in
firefox	rocky 8	0:91.7.0-3.el8_5

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Patch now	CVE-2022-26485	Mozilla Firefox Use-After-Free Vulnerability	9.8	0.1426	KEVExploited
Patch now	CVE-2022-26486	Mozilla Firefox Use-After-Free Vulnerability	9.8	0.0236	KEVExploited
Urgent	CVE-2022-26384	Mozilla Thunderbird and 4 others: Protection Mechanism Failure	9.8	0.0097	None reported
Urgent	CVE-2022-26381	Mozilla Thunderbird and 4 others: Use After Free	9.8	0.0087	None reported
Urgent	CVE-2022-26383	Mozilla Thunderbird and 4 others: User Interface (UI) Misrepresentation of Critical Information	9.8	0.0073	None reported
Urgent	CVE-2022-26386	firefox: Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This...	9.8	0.0071	None reported
Urgent	CVE-2022-26387	Mozilla Thunderbird and 4 others: Time-of-check Time-of-use (TOCTOU) Race Condition	9.8	0.0066	None reported
High	CVE-2022-25236	libxmltok1: xmlparse.c in Expat (aka libexpat) before 2.4.5 allows attackers to insert namespace-separator characters into namesp...	9.8	0.3527	None reported
High	CVE-2022-25235	libxmltok1: xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks for whether a...	9.8	0.0496	None reported
High	CVE-2022-25315	expat: In Expat (aka libexpat) before 2.4.5, there is an integer overflow in storeRawNames.	9.8	0.0482	None reported

Also fixes CVE-2022-26485

firefox 1:1snap1-0ubuntu1
firefox on Ubuntu 22.04.1 LTS (jammy)
RHSA-2022:0845
thunderbird on RHEL 8
RHSA-2022:0818
firefox on RHEL 8
ALSA-2022:0845
thunderbird on almalinux 8
RLSA-2022:0845
thunderbird on rocky 8
ELSA-2022-0845
thunderbird on ol 8
ALSA-2022:0818
firefox on almalinux 8
ELSA-2022-0818
firefox on ol 8

Vendor advisory

https://errata.rockylinux.org/RLSA-2022:0818

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