RHSA-2021:3836: Important: httpd:2.4 security update
First published: Wed Oct 13 2021(Updated: )
The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.<br>Security Fix(es):<br><li> httpd: mod_proxy: SSRF via a crafted request uri-path containing "unix:" (CVE-2021-40438)</li> 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.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/httpd | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1 | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 |
| redhat/httpd | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1 | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 |
| redhat/httpd-debuginfo | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1 | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 |
| redhat/httpd-debugsource | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1 | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 |
| redhat/httpd-devel | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1 | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 |
| redhat/httpd-filesystem | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1 | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 |
| redhat/httpd-manual | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1 | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 |
| redhat/httpd-tools | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1 | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 |
| redhat/httpd-tools-debuginfo | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1 | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 |
| redhat/httpd-debuginfo | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1 | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 |
| redhat/httpd-debugsource | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1 | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 |
| redhat/httpd-devel | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1 | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 |
| redhat/httpd-tools | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1 | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 |
| redhat/httpd-tools-debuginfo | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1 | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 |
| redhat/httpd | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1 | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 |
| redhat/httpd-debuginfo | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1 | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 |
| redhat/httpd-debugsource | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1 | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 |
| redhat/httpd-devel | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1 | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 |
| redhat/httpd-tools | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1 | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 |
| redhat/httpd-tools-debuginfo | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1 | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 |
| redhat/httpd | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1.aa | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1.aa |
| redhat/httpd-debuginfo | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1.aa | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1.aa |
| redhat/httpd-debugsource | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1.aa | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1.aa |
| redhat/httpd-devel | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1.aa | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1.aa |
| redhat/httpd-tools | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1.aa | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1.aa |
| redhat/httpd-tools-debuginfo | <2.4.37-21.module+el8.2.0+12904+53ee7aba.1.aa | 2.4.37-21.module+el8.2.0+12904+53ee7aba.1.aa |
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Reference Links
Frequently Asked Questions
What is the severity of RHSA-2021:3836?
The severity of RHSA-2021:3836 is classified as important.
How do I fix RHSA-2021:3836?
To fix RHSA-2021:3836, update your httpd package to version 2.4.37-21.module+el8.2.0+12904+53ee7aba.1 or later.
What does CVE-2021-40438 in RHSA-2021:3836 refer to?
CVE-2021-40438 refers to a Server-Side Request Forgery (SSRF) vulnerability in the mod_proxy module of Apache httpd.
Which packages are affected by RHSA-2021:3836?
The affected packages include httpd, httpd-debuginfo, httpd-devel, httpd-tools, and others in the Red Hat Enterprise Linux environment.
Is RHSA-2021:3836 related to a specific version of Apache HTTP Server?
Yes, RHSA-2021:3836 is specifically related to Apache HTTP Server version prior to 2.4.37-21.module+el8.2.0+12904+53ee7aba.1.
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