Bug 1933740 (CVE-2021-26701) - CVE-2021-26701 dotnet: System.Text.Encodings.Web Remote Code Execution
Summary: CVE-2021-26701 dotnet: System.Text.Encodings.Web Remote Code Execution
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-26701
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1933333 1933375 1933844 1933845 1934240 1934247
Blocks: 1933745
TreeView+ depends on / blocked
 
Reported: 2021-03-01 15:29 UTC by Marian Rehak
Modified: 2021-03-18 09:49 UTC (History)
9 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A remote code execution vulnerability was found in dotnet in the System.Text.Encodings.Web package, caused by a buffer overrun. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Clone Of:
Environment:
Last Closed: 2021-03-09 21:06:15 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2021:0924 0 None None None 2021-03-17 16:27:47 UTC
Red Hat Product Errata RHBA-2021:0925 0 None None None 2021-03-17 16:28:47 UTC
Red Hat Product Errata RHBA-2021:0927 0 None None None 2021-03-18 09:49:03 UTC
Red Hat Product Errata RHBA-2021:0928 0 None None None 2021-03-18 09:38:57 UTC
Red Hat Product Errata RHSA-2021:0787 0 None None None 2021-03-09 20:33:59 UTC
Red Hat Product Errata RHSA-2021:0788 0 None None None 2021-03-09 20:09:46 UTC
Red Hat Product Errata RHSA-2021:0789 0 None None None 2021-03-09 20:34:39 UTC
Red Hat Product Errata RHSA-2021:0790 0 None None None 2021-03-09 20:09:15 UTC
Red Hat Product Errata RHSA-2021:0793 0 None None None 2021-03-09 20:48:25 UTC
Red Hat Product Errata RHSA-2021:0794 0 None None None 2021-03-09 21:14:01 UTC

Description Marian Rehak 2021-03-01 15:29:16 UTC 
.NET Core Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-24112.

Reference:

https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-26701
Comment 9 Marian Rehak 2021-03-09 09:17:59 UTC 
Hello RaTasha,

The Microsoft advisory is quite sparse. Please read comment #2 by Omair Majid. RCE means the attacker's possibilities might to do damage might be very expanded including the compromise to all three C/I/A.
Comment 10 Stefan Cornelius 2021-03-09 18:25:42 UTC 
External References:

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26701
https://github.com/dotnet/announcements/issues/178
Comment 12 errata-xmlrpc 2021-03-09 20:09:13 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:0790 https://access.redhat.com/errata/RHSA-2021:0790
Comment 13 errata-xmlrpc 2021-03-09 20:09:45 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:0788 https://access.redhat.com/errata/RHSA-2021:0788
Comment 14 errata-xmlrpc 2021-03-09 20:33:58 UTC 
This issue has been addressed in the following products:

  .NET Core on Red Hat Enterprise Linux

Via RHSA-2021:0787 https://access.redhat.com/errata/RHSA-2021:0787
Comment 15 errata-xmlrpc 2021-03-09 20:34:38 UTC 
This issue has been addressed in the following products:

  .NET Core on Red Hat Enterprise Linux

Via RHSA-2021:0789 https://access.redhat.com/errata/RHSA-2021:0789
Comment 16 errata-xmlrpc 2021-03-09 20:48:24 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:0793 https://access.redhat.com/errata/RHSA-2021:0793
Comment 17 Product Security DevOps Team 2021-03-09 21:06:15 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-26701
Comment 18 errata-xmlrpc 2021-03-09 21:13:59 UTC 
This issue has been addressed in the following products:

  .NET Core on Red Hat Enterprise Linux

Via RHSA-2021:0794 https://access.redhat.com/errata/RHSA-2021:0794
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