Arch Linux Security Advisory ASA-202103-23
=========================================
Severity: High
Date    : 2021-03-25
CVE-ID  : CVE-2021-26701
Package : dotnet-sdk-3.1
Type    : arbitrary code execution
Remote  : Yes
Link    : https://security.archlinux.org/AVG-1701

Summary
======
The package dotnet-sdk-3.1 before version 3.1.13.sdk113-1 is vulnerable
to arbitrary code execution.

Resolution
=========
Upgrade to 3.1.13.sdk113-1.

# pacman -Syu "dotnet-sdk-3.1>=3.1.13.sdk113-1"

The problem has been fixed upstream in version 3.1.13.sdk113.

Workaround
=========
None.

Description
==========
A remote code execution vulnerability exists in .NET 5.0 before Runtime
5.0.4 and SDK 5.0.104 as well as .NET Core 3.1 before Runtime 3.1.13
and SDK 3.1.113 due to how text encoding is performed in the
System.Text.Encodings.Web package, caused by a buffer overrun.

Impact
=====
An attacker can execute arbitrary code by abusing the text encoding.

References
=========
https://msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26701
https://github.com/dotnet/announcements/issues/178
https://security.archlinux.org/CVE-2021-26701

ArchLinux: 202103-23: dotnet-sdk-3.1: arbitrary code execution

March 26, 2021

Summary

A remote code execution vulnerability exists in .NET 5.0 before Runtime 5.0.4 and SDK 5.0.104 as well as .NET Core 3.1 before Runtime 3.1.13 and SDK 3.1.113 due to how text encoding is performed in the System.Text.Encodings.Web package, caused by a buffer overrun.

Resolution

Upgrade to 3.1.13.sdk113-1. # pacman -Syu "dotnet-sdk-3.1>=3.1.13.sdk113-1"
The problem has been fixed upstream in version 3.1.13.sdk113.

References

https://msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26701 https://github.com/dotnet/announcements/issues/178 https://security.archlinux.org/CVE-2021-26701

Severity
Package : dotnet-sdk-3.1
Type : arbitrary code execution
Remote : Yes
Link : https://security.archlinux.org/AVG-1701

Workaround

None.

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