Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2019-9516

Uncontrolled Resource Consumption

Published: Aug 13, 2019 | Modified: Jan 14, 2025
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
6.8 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:C
RedHat/V2
RedHat/V3
6.5 IMPORTANT
CVSS:3.0/AV:N/AC:L/PR:L/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-2019-9516
CWEhttps://cwe.mitre.org/data/definitions/400.html

Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service. The attacker sends a stream of headers with a 0-length header name and 0-length header value, optionally Huffman encoded into 1-byte or greater headers. Some implementations allocate memory for these headers and keep the allocation alive until the session dies. This can consume excess memory.

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 8RedHatnginx:1.14-8000020190830002848.f8e95b4e*
Red Hat Enterprise Linux 8RedHatnodejs:10-8000020190911085529.f8e95b4e*
Red Hat Fuse 7.6.0RedHatundertow*
Red Hat Quay 3RedHatquay3/clair-jwt:v2.0.9-7*
Red Hat Software Collections for Red Hat Enterprise Linux 6RedHatrh-nginx110-nginx-1:1.10.2-9.el6.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-nginx110-nginx-1:1.10.2-9.el7.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-nginx112-nginx-1:1.12.1-3.el7.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-nginx114-nginx-1:1.14.1-1.el7.1*
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 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 7.4 EUSRedHatrh-nginx110-nginx-1:1.10.2-9.el7.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSRedHatrh-nginx112-nginx-1:1.12.1-3.el7.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSRedHatrh-nginx114-nginx-1:1.14.1-1.el7.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSRedHatrh-nginx110-nginx-1:1.10.2-9.el7.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSRedHatrh-nginx112-nginx-1:1.12.1-3.el7.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSRedHatrh-nginx114-nginx-1:1.14.1-1.el7.1*
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 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-nginx110-nginx-1:1.10.2-9.el7.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSRedHatrh-nginx112-nginx-1:1.12.1-3.el7.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSRedHatrh-nginx114-nginx-1:1.14.1-1.el7.1*
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 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-nginx110-nginx-1:1.10.2-9.el7.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatrh-nginx112-nginx-1:1.12.1-3.el7.1*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatrh-nginx114-nginx-1:1.14.1-1.el7.1*
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 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*
NginxUbuntubionic*
NginxUbuntucosmic*
NginxUbuntudevel*
NginxUbuntudisco*
NginxUbuntuesm-infra/bionic*
NginxUbuntuesm-infra/xenial*
NginxUbuntutrusty*
NginxUbuntuxenial*

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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