Bug 1705506 (CVE-2019-0820)

Summary: CVE-2019-0820 dotnet: timeouts for regular expressions are not enforced
Product: [Other] Security Response Reporter: Stefan Cornelius <scorneli>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: andrew.slice, bodavis, dbhole, kanderso, omajid, rjanekov, rwagner, scorneli, security-response-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Last Closed: 2019-06-10 10:54:55 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 1705533, 1705536, 1705539, 1709436, 1709439, 1710964    
Bug Blocks: 1703527    

Description Stefan Cornelius 2019-05-02 12:26:31 UTC 
It was discovered that RegEx strings were not properly processed, which can be exploited by anauthenticated remote attackers to cause a Denial of Service by sending specially crafted requests to a .NET Core application.

External references:

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0820
Comment 5 errata-xmlrpc 2019-05-15 21:54:36 UTC 
This issue has been addressed in the following products:

  .NET Core on Red Hat Enterprise Linux

Via RHSA-2019:1236 https://access.redhat.com/errata/RHSA-2019:1236
Comment 7 errata-xmlrpc 2019-05-22 10:22:18 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:1259 https://access.redhat.com/errata/RHSA-2019:1259