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CVE-2019-9517

high · 7.5

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.

7.5
CVSS
27.9%
EPSS (exploit prob.)
98th
EPSS percentile
2019-08-13
Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-400CWE-770

Affected products

VendorProductAffected versions
appleswiftnio>= 1.0.0, <= 1.4.0
applemac_os_x>= 10.12
canonicalubuntu_linux>= 14.04
apachehttp_server>= 2.4.20, < 2.4.40
apachetraffic_server>= 6.0.0, <= 6.2.3
apachetraffic_server>= 7.0.0, <= 7.1.6
apachetraffic_server>= 8.0.0, <= 8.0.3
canonicalubuntu_linux16.04
canonicalubuntu_linux18.04
canonicalubuntu_linux19.04
debiandebian_linux9.0
debiandebian_linux10.0
synologyskynasall versions
synologydiskstation_manager6.2
synologyvs960hd_firmwareall versions
synologyvs960hdall versions
fedoraprojectfedora29
fedoraprojectfedora30
opensuseleap15.0
opensuseleap15.1
redhatjboss_core_services1.0
redhatjboss_enterprise_application_platform7.2.0
redhatjboss_enterprise_application_platform7.3.0
redhatopenshift_service_mesh1.0
redhatquay3.0.0
redhatsoftware_collections1.0
redhatenterprise_linux8.0
oraclecommunications_element_manager8.0.0
oraclecommunications_element_manager8.1.0
oraclecommunications_element_manager8.1.1
oraclecommunications_element_manager8.2.0
oraclegraalvm19.2.0
oracleinstantis_enterprisetrack>= 17.1, <= 17.3
oracleretail_xstore_point_of_service7.1
mcafeeweb_gateway>= 7.7.2.0, < 7.7.2.24
mcafeeweb_gateway>= 7.8.2.0, < 7.8.2.13
mcafeeweb_gateway>= 8.1.0, < 8.2.0
netappclustered_data_ontapall versions
nodejsnode.js>= 8.0.0, <= 8.8.1
nodejsnode.js>= 8.9.0, < 8.16.1

Check a specific version with /api/v1/cve/match.

References

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2019-9517