ELSA-2021-3816: Security update for 11 packages

ELSA-2021-3816, released October 13, 2021, fixes 2 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 2 CVEs

Patch now 1
                                Urgent 0
                                High 1
                                Routine 0

Fixed package versions

Product	Release	Fixed in
httpd	ol 8	0:2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1
httpd-devel	ol 8	0:2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1
httpd-filesystem	ol 8	0:2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1
httpd-manual	ol 8	0:2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1
httpd-tools	ol 8	0:2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1
mod_http2	ol 8	0:1.15.7-3.module+el8.4.0+20024+b87b2deb
mod_ldap	ol 8	0:2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1
mod_md	ol 8	1:2.0.8-8.module+el8.3.0+7816+49791cfd
mod_proxy_html	ol 8	1:2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1
mod_session	ol 8	0:2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1
mod_ssl	ol 8	1:2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1

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

Also fixes CVE-2021-40438

ALSA-2021:4537
httpd, httpd-devel, httpd-filesystem and 8 more on almalinux 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://linux.oracle.com/errata/ELSA-2021-3816.html

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