NetSight
IP …
high7.5

CVE-2019-9511

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

Impact

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.

Affected products

VendorProductAffected versions
AppleSwiftnio
from 1.0.0 through 1.4.0
ApacheTraffic Server
from 6.0.0 through 6.2.3
from 7.0.0 through 7.1.6
from 8.0.0 through 8.0.3
CanonicalUbuntu Linux
Versions 16.04, 18.04, 19.04
DebianDebian Linux
Versions 9.0, 10.0
SynologySkynas
All versions
SynologyDiskstation Manager
Version 6.2
SynologyVs960hd Firmware
All versions
FedoraprojectFedora
Versions 29, 30
OpensuseLeap
Versions 15.0, 15.1
RedhatJboss Core Services
Version 1.0
RedhatJboss Enterprise Application Platform
Versions 7.2.0, 7.3.0
RedhatOpenshift Service Mesh
Version 1.0

Weakness classification

CWE-400CWE-770

References