ALSA-2021:4537: Security update for 11 packages

ALSA-2021:4537, released November 9, 2021, fixes 3 CVEs across 11 products. One of them is being exploited (CVE-2021-40438); 1 on CISA KEV. Patch Radar priority: Patch now.

Patch now1 on CISA KEVKnown ransomware use

CVEs closed

None rated Critical

Exploited

CVE-2021-40438

Highest CVSS

9.8

Base score, 0 to 10

Highest EPSS

1.0000

99th percentile

Priority of the 3 CVEs

Patch now 1
                                Urgent 0
                                High 2
                                Routine 0

Fixed package versions

Product	Release	Fixed in
httpd	almalinux 8	2.4.37-43.module_el8.5.0+2597+c4b14997.alma
httpd-devel	almalinux 8	2.4.37-43.module_el8.5.0+2597+c4b14997.alma
httpd-filesystem	almalinux 8	2.4.37-43.module_el8.5.0+2597+c4b14997.alma
httpd-manual	almalinux 8	2.4.37-43.module_el8.5.0+2597+c4b14997.alma
httpd-tools	almalinux 8	2.4.37-43.module_el8.5.0+2597+c4b14997.alma
mod_http2	almalinux 8	1.15.7-3.module_el8.5.0+2609+b30d9eec
mod_ldap	almalinux 8	2.4.37-43.module_el8.5.0+2597+c4b14997.alma
mod_md	almalinux 8	1:2.0.8-8.module_el8.5.0+2609+b30d9eec
mod_proxy_html	almalinux 8	1:2.4.37-43.module_el8.5.0+2597+c4b14997.alma
mod_session	almalinux 8	2.4.37-43.module_el8.5.0+2597+c4b14997.alma
mod_ssl	almalinux 8	1:2.4.37-43.module_el8.5.0+2597+c4b14997.alma

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Patch now	CVE-2021-40438	httpd: The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server. Security Fix(es...	9.0	1.0000	KEVRansomwareExploited
High	CVE-2021-26691	httpd-tools: The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server. Security Fix(es...	9.8	0.6807	None reported
High	CVE-2021-20325	httpd-tools: The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server. Security Fix(es...	9.8	0.0159	None reported

Also fixes CVE-2021-40438

ELSA-2021-3816
httpd, httpd-devel, httpd-filesystem and 8 more on ol 8
RHSA-2021:3816
httpd, httpd-devel, httpd-filesystem and 8 more on RHEL 8
ALBA-2021:4604
mod_http2, mod_md on almalinux 8
apache2 2.4.29-1ubuntu4.18
apache2 on Ubuntu 18.04.6 LTS (bionic)
apache2 2.4.41-4ubuntu3.6
apache2 on Ubuntu 20.04 LTS (focal)
apache2-bin 2.4.29-1ubuntu4.18
apache2-bin on Ubuntu 18.04.6 LTS (bionic)
apache2-bin 2.4.41-4ubuntu3.6
apache2-bin on Ubuntu 20.04 LTS (focal)
apache2-data 2.4.29-1ubuntu4.18
apache2-data on Ubuntu 18.04.6 LTS (bionic)

Vendor advisory

https://osv.dev/vulnerability/ALSA-2021:4537

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