Attacker Value
Unknown
CVE-2019-9517
CVE-2019-9517
(Last updated November 08, 2023) ▾
MITRE ATT&CK
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Description
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.
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CVSS V3 Severity and Metrics
Data provided by the National Vulnerability Database (NVD)
Base Score:
7.5 High
Impact Score:
3.6
Exploitability Score:
3.9
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High
General Information
Vendors
- apache,
- apple,
- canonical,
- debian,
- fedoraproject,
- mcafee,
- netapp,
- nodejs,
- opensuse,
- oracle,
- redhat,
- synology
Products
- clustered data ontap -,
- communications element manager 8.0.0,
- communications element manager 8.1.0,
- communications element manager 8.1.1,
- communications element manager 8.2.0,
- debian linux 10.0,
- debian linux 9.0,
- diskstation manager 6.2,
- enterprise linux 8.0,
- fedora 29,
- fedora 30,
- graalvm 19.2.0,
- http server,
- instantis enterprisetrack,
- jboss core services 1.0,
- jboss enterprise application platform 7.2.0,
- jboss enterprise application platform 7.3.0,
- leap 15.0,
- leap 15.1,
- node.js,
- openshift service mesh 1.0,
- quay 3.0.0,
- retail xstore point of service 7.1,
- skynas -,
- software collections 1.0,
- swiftnio,
- traffic server,
- ubuntu linux 16.04,
- ubuntu linux 18.04,
- ubuntu linux 19.04,
- vs960hd firmware -,
- web gateway
References
Advisory
