NetSight
IP …
high7.5

CVE-2019-9517

Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service.

Impact

Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service. The attacker opens the HTTP/2 window so the peer can send without constraint; however, they leave the TCP window closed so the peer cannot actually write (many of) the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending on how the servers queue the responses, this can consume excess memory, CPU, or both.

Affected products

VendorProductAffected versions
AppleSwiftnio
from 1.0.0 through 1.4.0
ApacheHttp Server
from 2.4.20 before 2.4.40
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

Weakness classification

CWE-400CWE-770

References