Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2019-9517

Uncontrolled Resource Consumption

Published: Aug 13, 2019 | Modified: Jan 14, 2025
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
7.8 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C
RedHat/V2
RedHat/V3
7.5 IMPORTANT
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2019-9517
CWEhttps://cwe.mitre.org/data/definitions/400.html

Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service. The attacker opens the HTTP/2 window so the peer can send without constraint; however, they leave the TCP window closed so the peer cannot actually write (many of) the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending on how the servers queue the responses, this can consume excess memory, CPU, or both.

Weakness

The product does not properly control the allocation and maintenance of a limited resource.

Affected Software

NameVendorStart VersionEnd Version
SwiftnioApple1.0.0 (including)1.4.0 (including)
JBoss Core Services on RHEL 6RedHatjbcs-httpd24-httpd-0:2.4.29-41.jbcs.el6*
JBoss Core Services on RHEL 6RedHatjbcs-httpd24-nghttp2-0:1.39.2-1.jbcs.el6*
JBoss Core Services on RHEL 6RedHatjbcs-httpd24-apr-0:1.6.3-63.jbcs.el6*
JBoss Core Services on RHEL 6RedHatjbcs-httpd24-apr-util-0:1.6.1-48.jbcs.el6*
JBoss Core Services on RHEL 6RedHatjbcs-httpd24-brotli-0:1.0.6-7.jbcs.el6*
JBoss Core Services on RHEL 6RedHatjbcs-httpd24-curl-0:7.64.1-14.jbcs.el6*
JBoss Core Services on RHEL 6RedHatjbcs-httpd24-httpd-0:2.4.37-33.jbcs.el6*
JBoss Core Services on RHEL 6RedHatjbcs-httpd24-jansson-0:2.11-20.jbcs.el6*
JBoss Core Services on RHEL 6RedHatjbcs-httpd24-mod_cluster-native-0:1.3.12-9.Final_redhat_2.jbcs.el6*
JBoss Core Services on RHEL 6RedHatjbcs-httpd24-mod_jk-0:1.2.46-22.redhat_1.jbcs.el6*
JBoss Core Services on RHEL 6RedHatjbcs-httpd24-mod_security-0:2.9.2-16.GA.jbcs.el6*
JBoss Core Services on RHEL 6RedHatjbcs-httpd24-nghttp2-0:1.39.2-4.jbcs.el6*
JBoss Core Services on RHEL 6RedHatjbcs-httpd24-openssl-1:1.1.1-25.jbcs.el6*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-httpd-0:2.4.29-41.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-nghttp2-0:1.39.2-1.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-apr-0:1.6.3-63.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-apr-util-0:1.6.1-48.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-brotli-0:1.0.6-7.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-curl-0:7.64.1-14.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-httpd-0:2.4.37-33.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-jansson-0:2.11-20.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-mod_cluster-native-0:1.3.12-9.Final_redhat_2.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-mod_jk-0:1.2.46-22.redhat_1.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-mod_security-0:2.9.2-16.GA.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-nghttp2-0:1.39.2-4.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-openssl-1:1.1.1-25.jbcs.el7*
Red Hat AMQRedHat*
Red Hat AMQ 7.4.3RedHat*
Red Hat Enterprise Linux 8RedHathttpd:2.4-8000020190829150747.f8e95b4e*
Red Hat Enterprise Linux 8RedHatnodejs:10-8000020190911085529.f8e95b4e*
Red Hat Fuse 7.6.0RedHatundertow*
Red Hat Software Collections for Red Hat Enterprise Linux 6RedHathttpd24-httpd-0:2.4.34-8.el6.1*
Red Hat Software Collections for Red Hat Enterprise Linux 6RedHathttpd24-nghttp2-0:1.7.1-7.el6.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-nodejs10-0:3.2-3.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-nodejs10-nodejs-0:10.16.3-3.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHathttpd24-httpd-0:2.4.34-8.el7.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHathttpd24-nghttp2-0:1.7.1-7.el7.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-nodejs8-0:3.0-5.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-nodejs8-nodejs-0:8.16.1-2.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSRedHatrh-nodejs10-0:3.2-3.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSRedHatrh-nodejs10-nodejs-0:10.16.3-3.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSRedHathttpd24-httpd-0:2.4.34-8.el7.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSRedHathttpd24-nghttp2-0:1.7.1-7.el7.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSRedHatrh-nodejs8-0:3.0-5.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSRedHatrh-nodejs8-nodejs-0:8.16.1-2.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSRedHatrh-nodejs10-0:3.2-3.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSRedHatrh-nodejs10-nodejs-0:10.16.3-3.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSRedHathttpd24-httpd-0:2.4.34-8.el7.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSRedHathttpd24-nghttp2-0:1.7.1-7.el7.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSRedHatrh-nodejs8-0:3.0-5.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSRedHatrh-nodejs8-nodejs-0:8.16.1-2.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatrh-nodejs10-0:3.2-3.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatrh-nodejs10-nodejs-0:10.16.3-3.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHathttpd24-httpd-0:2.4.34-8.el7.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHathttpd24-nghttp2-0:1.7.1-7.el7.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatrh-nodejs8-0:3.0-5.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatrh-nodejs8-nodejs-0:8.16.1-2.el7*
Text-Only JBCSRedHatmod_http2*
Text-Only JBCSRedHat*
Apache2Ubuntubionic*
Apache2Ubuntucosmic*
Apache2Ubuntudisco*
Apache2Ubuntuesm-infra/bionic*
Apache2Ubuntutrusty*
Apache2Ubuntuupstream*

Potential Mitigations

  • Mitigation of resource exhaustion attacks requires that the target system either:

  • The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.

  • The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.

References

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