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HIGH7.5

GHSA-h8wc-r4jh-mg7m

Umbraco allows possible Admin-level access to backoffice without Auth under rare conditions

Quick fix

GHSA-h8wc-r4jh-mg7m — Umbraco.Cms.Infrastructure: upgrade to the fixed version with the command below.

dotnet add package Umbraco.Cms.Infrastructure --version 10.6.1

Details

Under rare conditions, a restart of Umbraco can allow unauthorized users to gain admin-level permissions.

### Impact An unauthorized user gaining admin-level access and permissions to the backoffice.

### Patches 10.6.1, 11.4.2, 12.0.1

### Workarounds * Enabling the [Unattended Install](https://docs.umbraco.com/umbraco-cms/reference/configuration/unattendedsettings) feature will mean the vulnerability is not exploitable. * Enabling IP restrictions to `*/install/*` and `*/umbraco/*` will limit the exposure to allowed IP addresses.

Are you affected?

Enter the version of the package you're using.

Affected packages

NuGet/Umbraco.Cms.Infrastructure
Introduced in: 9.0.0Fixed in: 10.6.1
Fixdotnet add package Umbraco.Cms.Infrastructure --version 10.6.1
NuGet/Umbraco.Cms.Infrastructure
Introduced in: 11.0.0Fixed in: 11.4.2
Fixdotnet add package Umbraco.Cms.Infrastructure --version 11.4.2
NuGet/Umbraco.Cms.Infrastructure
Introduced in: 12.0.0Fixed in: 12.0.1
Fixdotnet add package Umbraco.Cms.Infrastructure --version 12.0.1
NuGet/Umbraco.Cms.Web.BackOffice
Introduced in: 9.0.0Fixed in: 10.6.1
Fixdotnet add package Umbraco.Cms.Web.BackOffice --version 10.6.1
NuGet/Umbraco.Cms.Web.BackOffice
Introduced in: 11.0.0Fixed in: 11.4.2
Fixdotnet add package Umbraco.Cms.Web.BackOffice --version 11.4.2
NuGet/Umbraco.Cms.Web.BackOffice
Introduced in: 12.0.0Fixed in: 12.0.1
Fixdotnet add package Umbraco.Cms.Web.BackOffice --version 12.0.1

References