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RedHat: RHSA-2019-2949-01 Important: httpd24-httpd DoS Risks

red hat
Calendar Grey October 1, 2019
Dist Redhat Esm H88
Significant enhancement for httpd24-httpd and httpd24-nghttp2 addresses key vulnerabilities on Red Hat systems.
An update for httpd24-httpd and httpd24-nghttp2 is now available for Red Hat Software Collections

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: large amount of data requests leads to denial of service (CVE-2019-9511)
* HTTP/2: flood using PRIORITY frames resulting in excessive resource consumption (CVE-2019-9513)
* 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 httpd important redhat httpd24

References

https://access.redhat.com/security/cve/CVE-2019-9511 https://access.redhat.com/security/cve/CVE-2019-9513 https://access.redhat.com/security/cve/CVE-2019-9517 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6):
Source: httpd24-httpd-2.4.34-8.el6.1.src.rpm httpd24-nghttp2-1.7.1-7.el6.1.src.rpm
noarch: httpd24-httpd-manual-2.4.34-8.el6.1.noarch.rpm
x86_64: httpd24-httpd-2.4.34-8.el6.1.x86_64.rpm httpd24-httpd-debuginfo-2.4.34-8.el6.1.x86_64.rpm httpd24-httpd-devel-2.4.34-8.el6.1.x86_64.rpm httpd24-httpd-tools-2.4.34-8.el6.1.x86_64.rpm httpd24-libnghttp2-1.7.1-7.el6.1.x86_64.rpm httpd24-libnghttp2-devel-1.7.1-7.el6.1.x86_64.rpm httpd24-mod_ldap-2.4.34-8.el6.1.x86_64.rpm httpd24-mod_proxy_html-2.4.34-8.el6.1.x86_64.rpm httpd24-mod_session-2.4.34-8.el6.1.x86_64.rpm httpd24-mod_ssl-2.4.34-8.el6.1.x86_64.rpm httpd24-nghttp2-1.7.1-7.el6.1.x86_64.rpm httpd24-nghttp2-debuginfo-1.7.1-7.el6.1.x86_64.rpm
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6):
Source: httpd24-httpd-2.4.34-8.el6.1.src.rpm httpd24-nghttp2-1.7.1-7.el6.1.src.rpm
noarch: httpd24-httpd-manual-2.4.34-8.el6.1.noarch.rpm
x86_64: httpd24-httpd-2.4.34-8.el6.1.x86_64.rpm httpd24-httpd-debuginfo-2.4.34-8.el6.1.x86_64.rpm httpd24-httpd-devel-2.4.34-8.el6.1.x86_64.rpm httpd24-httpd-tools-2.4.34-8.el6.1.x86_64.rpm httpd24-libnghttp2-1.7.1-7.el6.1.x86_64.rpm httpd24-libnghttp2-devel-1.7.1-7.el6.1.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:2949-01
Product: Red Hat Software Collections
Advisory URL: https://access.redhat.com/errata/RHSA-2019:2949
Issue date: 2019-10-01

Topic

An update for httpd24-httpd and httpd24-nghttp2 is now available for RedHat Software Collections.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 httpd important redhat httpd24

Relevant Releases Architectures

Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) - noarch, x86_64

Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) - aarch64, noarch, ppc64le, s390x, x86_64

Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) - noarch, ppc64le, s390x, x86_64

Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) - noarch, ppc64le, s390x, x86_64

Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) - noarch, ppc64le, s390x, x86_64

Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) - noarch, x86_64

Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64

Bugs Fixed

1735741 - CVE-2019-9513 HTTP/2: flood using PRIORITY frames results in excessive resource consumption

1741860 - CVE-2019-9511 HTTP/2: large amount of data requests leads to denial of service

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

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