RHSA-2022:0951: Security update for 2 packages

RHSA-2022:0951, released March 16, 2022, fixes 12 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

9.8

Base score, 0 to 10

Highest EPSS

0.3527

98th percentile

Priority of the 12 CVEs

Patch now 0
                                Urgent 0
                                High 12
                                Routine 0

Fixed package versions

Product	Release	Fixed in
expat	RHEL 8	0:2.2.5-4.el8_5.3
expat-devel	RHEL 8	0:2.2.5-4.el8_5.3

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
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-2022-22822	xul-ext-lightning: addBinding in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.	9.8	0.0548	None reported
High	CVE-2022-23852	expat: Expat (aka libexpat) before 2.4.4 has a signed integer overflow inXML_GetBuffer, for configurations with a nonzero XM...	9.8	0.0508	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
High	CVE-2021-45960	expat: In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) placesin the storeAtts function in xmlparse.c can...	9.8	0.0467	None reported
High	CVE-2021-46143	expat: In doProlog in xmlparse.c in Expat (aka libexpat) before 2.4.3, an integeroverflow exists for m_groupSize.	9.8	0.0447	None reported
High	CVE-2022-22823	thunderbird-mozsymbols: build_model in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.	9.8	0.0387	None reported
High	CVE-2022-22824	expat: defineAttribute in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.	9.8	0.0387	None reported
High	CVE-2022-22826	libxmltok1: nextScaffoldPart in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.	9.8	0.0318	None reported
High	CVE-2022-22827	thunderbird-gnome-support: storeAtts in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.	9.8	0.0318	None reported
High	CVE-2022-22825	libxmltok1: lookup in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.	9.8	0.0299	None reported

Also fixes CVE-2022-25236

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
RLSA-2022:0818
firefox on rocky 8

Vendor advisory

https://access.redhat.com/errata/RHSA-2022:0951

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