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Red Hat Enterprise Linux: RHSA-2019-2893-01 Critical Alert: HTTPD DoS Issue

red hat
Calendar Grey September 24, 2019
Dist Redhat Esm H88
Critical patch from Red Hat for httpd:2.4 addresses denial of service issues in RHEL 8. Learn additional details about this advisory.
An update for the httpd:2.4 module is now available for Red Hat Enterprise Linux 8

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):
* HTTP/2: request for large response leads to denial of service (CVE-2019-9517)
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 denial of service Red Hat Enterprise Linux httpd update Apache module Important

References

https://access.redhat.com/security/cve/CVE-2019-9517 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: httpd-2.4.37-12.module+el8.0.0+4096+eb40e6da.src.rpm mod_http2-1.11.3-3.module+el8.0.0+4096+eb40e6da.src.rpm
aarch64: httpd-2.4.37-12.module+el8.0.0+4096+eb40e6da.aarch64.rpm httpd-debuginfo-2.4.37-12.module+el8.0.0+4096+eb40e6da.aarch64.rpm httpd-debugsource-2.4.37-12.module+el8.0.0+4096+eb40e6da.aarch64.rpm httpd-devel-2.4.37-12.module+el8.0.0+4096+eb40e6da.aarch64.rpm httpd-tools-2.4.37-12.module+el8.0.0+4096+eb40e6da.aarch64.rpm httpd-tools-debuginfo-2.4.37-12.module+el8.0.0+4096+eb40e6da.aarch64.rpm mod_http2-1.11.3-3.module+el8.0.0+4096+eb40e6da.aarch64.rpm mod_http2-debuginfo-1.11.3-3.module+el8.0.0+4096+eb40e6da.aarch64.rpm mod_http2-debugsource-1.11.3-3.module+el8.0.0+4096+eb40e6da.aarch64.rpm mod_ldap-2.4.37-12.module+el8.0.0+4096+eb40e6da.aarch64.rpm mod_ldap-debuginfo-2.4.37-12.module+el8.0.0+4096+eb40e6da.aarch64.rpm mod_md-2.4.37-12.module+el8.0.0+4096+eb40e6da.aarch64.rpm mod_md-debuginfo-2.4.37-12.module+el8.0.0+4096+eb40e6da.aarch64.rpm mod_proxy_html-2.4.37-12.module+el8.0.0+4096+eb40e6da.aarch64.rpm mod_proxy_html-debuginfo-2.4.37-12.module+el8.0.0+4096+eb40e6da.aarch64.rpm mod_session-2.4.37-12.module+el8.0.0+4096+eb40e6da.aarch64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:2893-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:2893
Issue date: 2019-09-24

Topic

An update for the httpd:2.4 module is now available for Red Hat EnterpriseLinux 8.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 denial of service Red Hat Enterprise Linux httpd update Apache module Important

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

1741868 - CVE-2019-9517 HTTP/2: request for large response leads to denial of service

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