Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 8.0.xxx, .NET 9.0.xxx and .NET 10.0.xxx. This advisory also provides guidance on what developers can do to update their environments to remove this vulnerability.
A vulnerability exists in .NET where predictable paths for MSBuild's temporary directories on Linux let another user create the directories ahead of MSBuild, leading to DoS of builds. This only affects .NET on Linux operating systems.
Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/370
Projects which do not utilize the DownloadFile build task are not susceptible to this vulnerability.
The vulnerability affects any Microsoft .NET Core project if it uses any of affected packages versions listed below
Package name |Affected version | Patched version ------------ |---------------- | ------------------------- Microsoft.Build.Tasks.Core | 17.15.0-preview-25277-114 <br />>=17.14.0, <= 17.14.8 <br />>= 17.12.0, <= 17.12.36 <br/> >= 17.11.0, <= 17.11.31<br /> >= 17.10.0, <= 17.10.29 <br /> >= 17.8.0, <= 17.8.29 <br /> | 18.0.0-preview-25476-107 <br />17.14.28 <br />17.12.50 <br/>17.11.48 <br />17.10.46 <br />17.8.43 <br />
Package name|Affected version | Patched version ------------...
17.10.4617.11.4817.12.5017.14.2817.15.0-preview-25277-11418.0.0-preview-25476-10717.8.4317.10.4617.11.4817.12.5017.14.28Exploitability
AV:LAC:LPR:LUI:RScope
S:UImpact
C:HI:HA:H7.3/CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H