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Microsoft CVE-2018-0956: HTTP/2 Server Denial of Service Vulnerability

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Microsoft CVE-2018-0956: HTTP/2 Server Denial of Service Vulnerability

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
04/10/2018
Created
07/25/2018
Added
04/10/2018
Modified
11/18/2021

Description

A denial of service vulnerability exists in the HTTP/2 protocol stack (HTTP.sys) when HTTP.sys improperly parses specially crafted HTTP/2 requests. An attacker who successfully exploited the vulnerability could create a denial of service condition, causing the target system to become unresponsive. To exploit this vulnerability, an unauthenticated attacker could send a specially crafted HTTP packet to a target system, causing the affected system to become nonresponsive. The update addresses the vulnerability by modifying how the Windows HTTP protocol stack handles HTTP/2 requests. Note that the denial of service vulnerability would not allow an attacker to execute code or to elevate user rights.

Solution(s)

  • msft-kb4093107-08089676-57b7-4989-a27a-3759fa8d6293
  • msft-kb4093107-50d58037-2bcc-4a70-88ee-08807c15d7c1
  • msft-kb4093109-98ac416f-e0b8-4ced-9de8-d229b75b4d7a
  • msft-kb4093109-a4bfa4a8-f44e-4592-86ec-e8d606a3834a
  • msft-kb4093111-8d8e864a-f255-490d-98b0-4a825a5cae59
  • msft-kb4093111-d5034640-e881-4563-bfe3-d0c3fc27fa1e
  • msft-kb4093112-7a639cb5-17a8-47d3-8879-3a2827b51b56
  • msft-kb4093112-7dd55f48-a1f3-4945-80c1-5ce237a6a28d
  • msft-kb4093112-936c76bd-d063-4f5c-82d9-7fb5dcbf720d
  • msft-kb4093119-6dff2995-bf8d-4ef1-81b1-c1bc64b59b80
  • msft-kb4093119-74292a2d-143e-450b-bdff-d56ac8c86c4f
  • msft-kb4093119-d00807b9-f15f-4e04-a1f3-b94cd2d3f66a

References

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