Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2019-9518

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-2019-9518
CWEhttps://cwe.mitre.org/data/definitions/400.html

Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service. The attacker sends a stream of frames with an empty payload and without the end-of-stream flag. These frames can be DATA, HEADERS, CONTINUATION and/or PUSH_PROMISE. The peer spends time processing each frame disproportionate to attack bandwidth. This can consume excess CPU.

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)
Red Hat AMQRedHat*
Red Hat AMQ 7.4.3RedHat*
Red Hat Data Grid 7.3.3RedHatnetty*
Red Hat Decision Manager 7RedHatnetty*
Red Hat Enterprise Linux 8RedHatnodejs:10-8000020190911085529.f8e95b4e*
Red Hat Fuse 6.3RedHatnetty*
Red Hat Fuse 7.5.0RedHatnetty*
Red Hat Fuse 7.6.0RedHatundertow*
Red Hat Process Automation 7RedHatnetty*
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 7.5 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-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-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*
NettyUbuntubionic*
NettyUbuntudisco*
NettyUbuntueoan*
NettyUbuntuesm-apps/bionic*
NettyUbuntugroovy*
NettyUbuntuhirsute*
NettyUbuntuimpish*
NettyUbuntukinetic*
NettyUbuntulunar*
NettyUbuntumantic*
NettyUbuntutrusty*
NettyUbuntuupstream*
TrafficserverUbuntubionic*
TrafficserverUbuntuesm-apps/bionic*
TrafficserverUbuntugroovy*
TrafficserverUbuntuhirsute*
TrafficserverUbuntuimpish*
TrafficserverUbuntukinetic*
TrafficserverUbuntulunar*
TrafficserverUbuntumantic*
TrafficserverUbuntuoracular*
TrafficserverUbuntuplucky*
TrafficserverUbuntutrusty*
TrafficserverUbuntuupstream*
TrafficserverUbuntuxenial*

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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