Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

CVE-2019-9511

Disclosure Date: August 13, 2019
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

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.

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CVSS V3 Severity and Metrics
Base Score:
7.5 High
Impact Score:
3.6
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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,
  • f5,
  • fedoraproject,
  • mcafee,
  • nodejs,
  • opensuse,
  • oracle,
  • redhat,
  • synology

Products

  • debian linux 10.0,
  • debian linux 9.0,
  • diskstation manager 6.2,
  • enterprise communications broker 3.1.0,
  • enterprise communications broker 3.2.0,
  • enterprise linux 8.0,
  • fedora 29,
  • fedora 30,
  • graalvm 19.2.0,
  • 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,
  • nginx,
  • node.js,
  • openshift service mesh 1.0,
  • quay 3.0.0,
  • 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

Additional Info

Technical Analysis