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Multiple Vulnerabilities in DotNetNuke Could Allow for Remote Code Execution

MS-ISAC ADVISORY NUMBER:

2017-085

DATE(S) ISSUED:

09/19/2017

OVERVIEW:

Multiple vulnerabilities have been discovered in DotNetNuke (DNN), which could allow for remote code execution if a file containing malicious code is uploaded. Successful exploitation of these vulnerabilities could allow for remote code execution in the context of the user associated with the service. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.

THREAT INTELLIGENCE:

There have been no reports of these vulnerabilities being exploited in the wild.

SYSTEMS AFFECTED:

  • DNN 5.6.3 and later

RISK:

Government:
  • Large and medium government entities: HIGH
  • Small government entities: MEDIUM
Businesses:
  • Large and medium business entities: HIGH
  • Small business entities: MEDIUM
Home Users:
N/A

TECHNICAL SUMMARY:

Multiple vulnerabilities have been discovered in DotNetNuke (DNN), which could allow for remote code execution if a file containing malicious code is uploaded. These vulnerabilities exist due to security issues within the Telerik component (Telerik.Web.UI.Dll assembly) of DNN. Three remote code execution vulnerabilities exist when a file is uploaded to a location that could allow for auto-processing of files and therefore the code contained within. (CVE-2017-11317, CVE-2017-11357, CVE-2014-2217)
Successful exploitation of these vulnerabilities could allow for remote code execution in the context of the user associated with the service. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.

RECOMENDATIONS:

We recommend the following actions be taken:

  • Apply appropriate hotfix patches provided by DNN and Telerik to vulnerable systems immediately after appropriate testing.
  • Apply the Principle of Least Privilege to all systems and services

REFERENCES:

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