apache traffic-server CVE-2019-9511 vulnerability in Apache and Other Products
Published on August 13, 2019

Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service

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Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service. The attacker requests a large amount of data from a specified resource over multiple streams. They manipulate window size and stream priority to force the server to queue the data in 1-byte chunks. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

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Weakness Type

What is a Resource Exhaustion Vulnerability?

The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

CVE-2019-9511 has been classified to as a Resource Exhaustion vulnerability or weakness.


Products Associated with CVE-2019-9511

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2019-9511 are published in these products:

Apache Traffic Server
 
McAfee Web Gateway
 
nginx
 
Oracle Enterprise Communications Broker
 
Oracle GraalVM
 
Red Hat Jboss Enterprise Application Platform
 
Red Hat Openshift Service Mesh
 
Red Hat Quay
 
Synology Diskstation Manager
 
Synology Skynas
 
Canonical Ubuntu Linux
 
Debian Linux
 
Fedora Project Fedora
 
OpenSuse Leap
 
Red Hat Enterprise Linux (RHEL)
 
Red Hat Jboss Core Services
 
Red Hat Software Collections
 
F5 Networks Nginx
 
nodejs node.js
 

Exploit Probability

EPSS
13.95%
Percentile
94.22%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.