CVE-2021-26691

httpd-tools: The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server. Security Fix(es...

CVE-2021-26691 is fixed in 19 products on 1 platform, first by apache2 2.4.29-1ubuntu4.16, released June 10, 2021. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
9.8
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.6807
99th percentile

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server. Security Fix(es): * httpd: mod_proxy: SSRF via a crafted request uri-path containing "unix:" (CVE-2021-40438) * httpd: mod_session: Heap overflow via a crafted SessionHeader value (CVE-2021-26691) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Where it's fixed

ProductFixed inFixReleased
Linux
apache2 · Ubuntu 18.04.6 LTS (bionic) 2.4.29-1ubuntu4.16 apache2 2.4.29-1ubuntu4.16 Jun 10, 2021
apache2 · Ubuntu 20.04 LTS (focal) 2.4.41-4ubuntu3.3 apache2 2.4.41-4ubuntu3.3 Jun 10, 2021
apache2-bin · Ubuntu 18.04.6 LTS (bionic) 2.4.29-1ubuntu4.16 apache2-bin 2.4.29-1ubuntu4.16 Jun 10, 2021
apache2-bin · Ubuntu 20.04 LTS (focal) 2.4.41-4ubuntu3.3 apache2-bin 2.4.41-4ubuntu3.3 Jun 10, 2021
apache2-data · Ubuntu 18.04.6 LTS (bionic) 2.4.29-1ubuntu4.16 apache2-data 2.4.29-1ubuntu4.16 Jun 10, 2021
apache2-data · Ubuntu 20.04 LTS (focal) 2.4.41-4ubuntu3.3 apache2-data 2.4.41-4ubuntu3.3 Jun 10, 2021
apache2-suexec-custom · Ubuntu 18.04.6 LTS (bionic) 2.4.29-1ubuntu4.16 apache2-suexec-custom 2.4.29-1ubuntu4.16 Jun 10, 2021
apache2-suexec-custom · Ubuntu 20.04 LTS (focal) 2.4.41-4ubuntu3.3 apache2-suexec-custom 2.4.41-4ubuntu3.3 Jun 10, 2021
apache2-suexec-pristine · Ubuntu 18.04.6 LTS (bionic) 2.4.29-1ubuntu4.16 apache2-suexec-pristine 2.4.29-1ubuntu4.16 Jun 10, 2021
apache2-suexec-pristine · Ubuntu 20.04 LTS (focal) 2.4.41-4ubuntu3.3 apache2-suexec-pristine 2.4.41-4ubuntu3.3 Jun 10, 2021
apache2-utils · Ubuntu 18.04.6 LTS (bionic) 2.4.29-1ubuntu4.16 apache2-utils 2.4.29-1ubuntu4.16 Jun 10, 2021
apache2-utils · Ubuntu 20.04 LTS (focal) 2.4.41-4ubuntu3.3 apache2-utils 2.4.41-4ubuntu3.3 Jun 10, 2021
httpd · RHEL 8 0:2.4.37-39.module+el8.4.0+12865+a7065a39.1 RHSA-2021:3816 Oct 12, 2021
httpd · ol 8 0:2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1 ELSA-2021-3816 Oct 13, 2021
httpd-devel · RHEL 8 0:2.4.37-39.module+el8.4.0+12865+a7065a39.1 RHSA-2021:3816 Oct 12, 2021
httpd-devel · ol 8 0:2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1 ELSA-2021-3816 Oct 13, 2021
httpd-filesystem · RHEL 8 0:2.4.37-39.module+el8.4.0+12865+a7065a39.1 RHSA-2021:3816 Oct 12, 2021
httpd-filesystem · ol 8 0:2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1 ELSA-2021-3816 Oct 13, 2021
httpd-manual · RHEL 8 0:2.4.37-39.module+el8.4.0+12865+a7065a39.1 RHSA-2021:3816 Oct 12, 2021
httpd-manual · ol 8 0:2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1 ELSA-2021-3816 Oct 13, 2021
httpd-tools · RHEL 8 0:2.4.37-39.module+el8.4.0+12865+a7065a39.1 RHSA-2021:3816 Oct 12, 2021
httpd-tools · ol 8 0:2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1 ELSA-2021-3816 Oct 13, 2021
libapache2-mod-md · Ubuntu 20.04 LTS (focal) 2.4.41-4ubuntu3.3 libapache2-mod-md 2.4.41-4ubuntu3.3 Jun 10, 2021
libapache2-mod-proxy-uwsgi · Ubuntu 20.04 LTS (focal) 2.4.41-4ubuntu3.3 libapache2-mod-proxy-uwsgi 2.4.41-4ubuntu3.3 Jun 10, 2021
mod_http2 · RHEL 8 0:1.15.7-3.module+el8.4.0+8625+d397f3da RHSA-2021:3816 Oct 12, 2021
mod_http2 · ol 8 0:1.15.7-3.module+el8.4.0+20024+b87b2deb ELSA-2021-3816 Oct 13, 2021
mod_ldap · RHEL 8 0:2.4.37-39.module+el8.4.0+12865+a7065a39.1 RHSA-2021:3816 Oct 12, 2021
mod_ldap · ol 8 0:2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1 ELSA-2021-3816 Oct 13, 2021
mod_md · RHEL 8 1:2.0.8-8.module+el8.3.0+6814+67d1e611 RHSA-2021:3816 Oct 12, 2021
mod_md · ol 8 1:2.0.8-8.module+el8.3.0+7816+49791cfd ELSA-2021-3816 Oct 13, 2021
mod_proxy_html · RHEL 8 1:2.4.37-39.module+el8.4.0+12865+a7065a39.1 RHSA-2021:3816 Oct 12, 2021
mod_proxy_html · ol 8 1:2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1 ELSA-2021-3816 Oct 13, 2021
mod_session · RHEL 8 0:2.4.37-39.module+el8.4.0+12865+a7065a39.1 RHSA-2021:3816 Oct 12, 2021
mod_session · ol 8 0:2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1 ELSA-2021-3816 Oct 13, 2021
mod_ssl · RHEL 8 1:2.4.37-39.module+el8.4.0+12865+a7065a39.1 RHSA-2021:3816 Oct 12, 2021
mod_ssl · ol 8 1:2.4.37-39.0.1.module+el8.4.0+20372+b87b2deb.1 ELSA-2021-3816 Oct 13, 2021

Patch Radar data is free to use with attribution. Terms and how to credit it.

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.