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Red Hat Enterprise Linux 8.1: RHSA-2021-3837-01 Important SSRF Fix

red hat
Calendar Grey October 13, 2021
Dist Redhat Esm H88
The httpd:2.4 module has received a critical update to address SSRF vulnerabilities, classified as High Priority by Red Hat for Red Hat Enterprise Linux.
An update for the httpd:2.4 module is now available for Red Hat Enterprise Linux 8.1 Extended Update Support

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing the updated packages, the httpd daemon will be restarted automatically.

Summary

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)
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.

Topics%20covered

Topics Covered

security advisory red hat enterprise linux important update httpd module ssrf issue

References

https://access.redhat.com/security/cve/CVE-2021-40438 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux AppStream EUS (v. 8.1):
Source: httpd-2.4.37-16.module+el8.1.0+12900+7e6e5641.1.src.rpm mod_http2-1.11.3-3.module+el8.1.0+7763+babdfe5b.1.src.rpm
aarch64: httpd-2.4.37-16.module+el8.1.0+12900+7e6e5641.1.aarch64.rpm httpd-debuginfo-2.4.37-16.module+el8.1.0+12900+7e6e5641.1.aarch64.rpm httpd-debugsource-2.4.37-16.module+el8.1.0+12900+7e6e5641.1.aarch64.rpm httpd-devel-2.4.37-16.module+el8.1.0+12900+7e6e5641.1.aarch64.rpm httpd-tools-2.4.37-16.module+el8.1.0+12900+7e6e5641.1.aarch64.rpm httpd-tools-debuginfo-2.4.37-16.module+el8.1.0+12900+7e6e5641.1.aarch64.rpm mod_http2-1.11.3-3.module+el8.1.0+7763+babdfe5b.1.aarch64.rpm mod_http2-debuginfo-1.11.3-3.module+el8.1.0+7763+babdfe5b.1.aarch64.rpm mod_http2-debugsource-1.11.3-3.module+el8.1.0+7763+babdfe5b.1.aarch64.rpm mod_ldap-2.4.37-16.module+el8.1.0+12900+7e6e5641.1.aarch64.rpm mod_ldap-debuginfo-2.4.37-16.module+el8.1.0+12900+7e6e5641.1.aarch64.rpm mod_md-2.4.37-16.module+el8.1.0+12900+7e6e5641.1.aarch64.rpm mod_md-debuginfo-2.4.37-16.module+el8.1.0+12900+7e6e5641.1.aarch64.rpm mod_proxy_html-2.4.37-16.module+el8.1.0+12900+7e6e5641.1.aarch64.rpm mod_proxy_html-debuginfo-2.4.37-16.module+el8.1.0+12900+7e6e5641.1.aarch64.rpm mod_session-2.4.37-16.module+el8.1.0+12900+7e6e5641.1.aarch64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:3837-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3837
Issue date: 2021-10-13

Topic

An update for the httpd:2.4 module is now available for Red Hat EnterpriseLinux 8.1 Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory red hat enterprise linux important update httpd module ssrf issue

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream EUS (v. 8.1) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

2005117 - CVE-2021-40438 httpd: mod_proxy: SSRF via a crafted request uri-path containing "unix:"

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