Bug 1660636 (CVE-2019-0548) - CVE-2019-0548 Asp.NET Core: AspNetCoreModule WebSocket DOS
Summary: CVE-2019-0548 Asp.NET Core: AspNetCoreModule WebSocket DOS
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-0548
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 1660643
TreeView+ depends on / blocked
 
Reported: 2018-12-18 21:25 UTC by Laura Pardo
Modified: 2019-09-29 15:04 UTC (History)
9 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2019-09-27 09:38:29 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2019:0040 0 None None None 2019-01-09 08:52:52 UTC

Description Laura Pardo 2018-12-18 21:25:43 UTC 
Today, aborted websocket connections to keep an open connection between ANCM and Kestrel due to a bug with websocket disconnect detection. If continued, internal ports would be exhausted, causing the server to effectively be DDOS’d.
Comment 3 errata-xmlrpc 2019-01-09 08:52:51 UTC 
This issue has been addressed in the following products:

  .NET Core on Red Hat Enterprise Linux

Via RHSA-2019:0040 https://access.redhat.com/errata/RHSA-2019:0040
Comment 4 Tomas Hoger 2019-03-31 14:57:22 UTC 
References:

https://github.com/aspnet/Announcements/issues/335
https://github.com/aspnet/AspNetCore/issues/6488
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0548
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