// For flags

CVE-2019-9513

Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service. The attacker creates multiple request streams and continually shuffles the priority of the streams in a way that causes substantial churn to the priority tree. This can consume excess CPU.

Algunas implementaciones de HTTP / 2 son vulnerables a los bucles de recursos, lo que puede conducir a una denegación de servicio. El atacante crea múltiples flujos de solicitud y baraja continuamente la prioridad de los flujos de una manera que provoca un cambio considerable en el árbol de prioridad. Esto puede consumir un exceso de CPU.

A flaw was found in HTTP/2. An attacker, using PRIORITY frames to flood the system, could cause excessive CPU usage and starvation of other clients. The largest threat from this vulnerability is to system availability.

*Credits: Thanks to Jonathan Looney of Netflix for reporting this vulnerability.
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-03-01 CVE Reserved
  • 2019-08-13 CVE Published
  • 2024-08-04 CVE Updated
  • 2024-10-17 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-400: Uncontrolled Resource Consumption
CAPEC
References (44)
URL Date SRC
URL Date SRC
URL Date SRC
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html 2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html 2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00035.html 2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00003.html 2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00005.html 2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00014.html 2023-11-07
https://access.redhat.com/errata/RHSA-2019:2692 2023-11-07
https://access.redhat.com/errata/RHSA-2019:2745 2023-11-07
https://access.redhat.com/errata/RHSA-2019:2746 2023-11-07
https://access.redhat.com/errata/RHSA-2019:2775 2023-11-07
https://access.redhat.com/errata/RHSA-2019:2799 2023-11-07
https://access.redhat.com/errata/RHSA-2019:2925 2023-11-07
https://access.redhat.com/errata/RHSA-2019:2939 2023-11-07
https://access.redhat.com/errata/RHSA-2019:2949 2023-11-07
https://access.redhat.com/errata/RHSA-2019:2955 2023-11-07
https://access.redhat.com/errata/RHSA-2019:2966 2023-11-07
https://access.redhat.com/errata/RHSA-2019:3041 2023-11-07
https://access.redhat.com/errata/RHSA-2019:3932 2023-11-07
https://access.redhat.com/errata/RHSA-2019:3933 2023-11-07
https://access.redhat.com/errata/RHSA-2019:3935 2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ZQGHE3WTYLYAYJEIDJVF2FIGQTAYPMC 2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CMNFX5MNYRWWIMO4BTKYQCGUDMHO3AXP 2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JUBYAF6ED3O4XCHQ5C2HYENJLXYXZC4M 2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LZLUYPYY3RX4ZJDWZRJIKSULYRJ4PXW7 2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/POPAEC4FWL4UU4LDEGPY5NPALU24FFQD 2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TAZZEVTCN2B4WT6AIBJ7XGYJMBTORJU5 2023-11-07
https://usn.ubuntu.com/4099-1 2023-11-07
https://www.debian.org/security/2019/dsa-4505 2023-11-07
https://www.debian.org/security/2019/dsa-4511 2023-11-07
https://www.debian.org/security/2020/dsa-4669 2023-11-07
https://access.redhat.com/security/cve/CVE-2019-9513 2020-03-26
https://bugzilla.redhat.com/show_bug.cgi?id=1735741 2020-03-26
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Apple
Search vendor "Apple"
Swiftnio
Search vendor "Apple" for product "Swiftnio"
>= 1.0.0 <= 1.4.0
Search vendor "Apple" for product "Swiftnio" and version " >= 1.0.0 <= 1.4.0"
-
Affected
in Apple
Search vendor "Apple"
Mac Os X
Search vendor "Apple" for product "Mac Os X"
>= 10.12
Search vendor "Apple" for product "Mac Os X" and version " >= 10.12"
-
Safe
Apple
Search vendor "Apple"
Swiftnio
Search vendor "Apple" for product "Swiftnio"
>= 1.0.0 <= 1.4.0
Search vendor "Apple" for product "Swiftnio" and version " >= 1.0.0 <= 1.4.0"
-
Affected
in Canonical
Search vendor "Canonical"
Ubuntu Linux
Search vendor "Canonical" for product "Ubuntu Linux"
>= 14.04
Search vendor "Canonical" for product "Ubuntu Linux" and version " >= 14.04"
-
Safe
Synology
Search vendor "Synology"
Vs960hd Firmware
Search vendor "Synology" for product "Vs960hd Firmware"
--
Affected
in Synology
Search vendor "Synology"
Vs960hd
Search vendor "Synology" for product "Vs960hd"
--
Safe
Apache
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Traffic Server
Search vendor "Apache" for product "Traffic Server"
>= 6.0.0 <= 6.2.3
Search vendor "Apache" for product "Traffic Server" and version " >= 6.0.0 <= 6.2.3"
-
Affected
Apache
Search vendor "Apache"
Traffic Server
Search vendor "Apache" for product "Traffic Server"
>= 7.0.0 <= 7.1.6
Search vendor "Apache" for product "Traffic Server" and version " >= 7.0.0 <= 7.1.6"
-
Affected
Apache
Search vendor "Apache"
Traffic Server
Search vendor "Apache" for product "Traffic Server"
>= 8.0.0 <= 8.0.3
Search vendor "Apache" for product "Traffic Server" and version " >= 8.0.0 <= 8.0.3"
-
Affected
Canonical
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Ubuntu Linux
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16.04
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lts
Affected
Canonical
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Ubuntu Linux
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18.04
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lts
Affected
Canonical
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Ubuntu Linux
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19.04
Search vendor "Canonical" for product "Ubuntu Linux" and version "19.04"
-
Affected
Debian
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Debian Linux
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9.0
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-
Affected
Debian
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Debian Linux
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10.0
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-
Affected
Fedoraproject
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Fedora
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30
Search vendor "Fedoraproject" for product "Fedora" and version "30"
-
Affected
Synology
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Diskstation Manager
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6.2
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-
Affected
Synology
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Skynas
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--
Affected
Debian
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Debian Linux
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9.0
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-
Affected
Debian
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Debian Linux
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10.0
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-
Affected
Fedoraproject
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Fedora
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29
Search vendor "Fedoraproject" for product "Fedora" and version "29"
-
Affected
Fedoraproject
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Fedora
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30
Search vendor "Fedoraproject" for product "Fedora" and version "30"
-
Affected
Opensuse
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Leap
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15.0
Search vendor "Opensuse" for product "Leap" and version "15.0"
-
Affected
Opensuse
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Leap
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15.1
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-
Affected
Redhat
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Jboss Core Services
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1.0
Search vendor "Redhat" for product "Jboss Core Services" and version "1.0"
-
Affected
Redhat
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Jboss Enterprise Application Platform
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7.2.0
Search vendor "Redhat" for product "Jboss Enterprise Application Platform" and version "7.2.0"
-
Affected
Redhat
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Jboss Enterprise Application Platform
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7.3.0
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-
Affected
Redhat
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Openshift Service Mesh
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1.0
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-
Affected
Redhat
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Quay
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3.0.0
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-
Affected
Redhat
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Software Collections
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1.0
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-
Affected
Redhat
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Enterprise Linux
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8.0
Search vendor "Redhat" for product "Enterprise Linux" and version "8.0"
-
Affected
Oracle
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Graalvm
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19.2.0
Search vendor "Oracle" for product "Graalvm" and version "19.2.0"
enterprise
Affected
Mcafee
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Web Gateway
Search vendor "Mcafee" for product "Web Gateway"
>= 7.7.2.0 < 7.7.2.24
Search vendor "Mcafee" for product "Web Gateway" and version " >= 7.7.2.0 < 7.7.2.24"
-
Affected
Mcafee
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Web Gateway
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>= 7.8.2.0 < 7.8.2.13
Search vendor "Mcafee" for product "Web Gateway" and version " >= 7.8.2.0 < 7.8.2.13"
-
Affected
Mcafee
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Web Gateway
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>= 8.1.0 < 8.2.0
Search vendor "Mcafee" for product "Web Gateway" and version " >= 8.1.0 < 8.2.0"
-
Affected
F5
Search vendor "F5"
Nginx
Search vendor "F5" for product "Nginx"
>= 1.9.5 < 1.16.1
Search vendor "F5" for product "Nginx" and version " >= 1.9.5 < 1.16.1"
-
Affected
F5
Search vendor "F5"
Nginx
Search vendor "F5" for product "Nginx"
>= 1.17.0 <= 1.17.2
Search vendor "F5" for product "Nginx" and version " >= 1.17.0 <= 1.17.2"
-
Affected
Oracle
Search vendor "Oracle"
Enterprise Communications Broker
Search vendor "Oracle" for product "Enterprise Communications Broker"
3.1.0
Search vendor "Oracle" for product "Enterprise Communications Broker" and version "3.1.0"
-
Affected
Oracle
Search vendor "Oracle"
Enterprise Communications Broker
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3.2.0
Search vendor "Oracle" for product "Enterprise Communications Broker" and version "3.2.0"
-
Affected
Nodejs
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Node.js
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>= 8.0.0 <= 8.8.1
Search vendor "Nodejs" for product "Node.js" and version " >= 8.0.0 <= 8.8.1"
-
Affected
Nodejs
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Node.js
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>= 8.9.0 < 8.16.1
Search vendor "Nodejs" for product "Node.js" and version " >= 8.9.0 < 8.16.1"
lts
Affected
Nodejs
Search vendor "Nodejs"
Node.js
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>= 10.0.0 <= 10.12.0
Search vendor "Nodejs" for product "Node.js" and version " >= 10.0.0 <= 10.12.0"
-
Affected
Nodejs
Search vendor "Nodejs"
Node.js
Search vendor "Nodejs" for product "Node.js"
>= 10.13.0 < 10.16.3
Search vendor "Nodejs" for product "Node.js" and version " >= 10.13.0 < 10.16.3"
lts
Affected
Nodejs
Search vendor "Nodejs"
Node.js
Search vendor "Nodejs" for product "Node.js"
>= 12.0.0 < 12.8.1
Search vendor "Nodejs" for product "Node.js" and version " >= 12.0.0 < 12.8.1"
-
Affected