NetSight
IP …
high7.5

CVE-2019-9515

Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service.

Impact

Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RFC requires that the peer reply with one acknowledgement per SETTINGS frame, an empty SETTINGS frame is almost equivalent in behavior to a ping. 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 Container Platform
Version 4.1

Weakness classification

CWE-400CWE-770

References