CIS CYBER SECURITY ADVISORIES

MS-ISAC CYBER SECURITY ADVISORY NUMBER:
2014-012

DATE(S) ISSUED:
02/10/2014

SUBJECT:
Vulnerability in Microsoft Forefront Protection for Exchange Could Allow Remote Code Execution (MS14-008)

OVERVIEW:

EXECUTIVE SUMMARY:
A vulnerability has been found in Microsoft Forefront Protection for Exchange 2010 that could allow an attacker to take complete control of an affected system. Microsoft Forefront Protection provides defense against malware and spam by scanning emails and attachments for malicious content. Successful exploitation of these vulnerabilities could result in an attacker gaining the same privileges as the logged on user. 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.

THREAT INTELLIGENCE:
At this time these vulnerabilities are not publicly disclosed and there is no known proof-of-concept code available.

SYSTEMS AFFECTED:

  • Microsoft Forefront Protection 2010 for Exchange Server

 

RISK:
Government:

Large and medium government entities: High
Small government entities: High

Businesses:
Large and medium business entities: High
Small business entities: High

Home users: High

TECHNICAL SUMMARY:
A vulnerability has been privately reported to Microsoft that could allow for remote code execution within the Microsoft Forefront Exchange Server add-on. This vulnerability results in remote code execution when a mail parsing error occurs from Microsoft Forefront scanning a specially crafted email.

Successful exploitation could result in an attacker gaining the same privileges as the service account Microsoft Exchange was being run. 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.

RECOMMENDATIONS:
We recommend the following actions be taken:

  • Apply appropriate patches provided by Microsoft to vulnerable systems immediately after appropriate testing.
  • Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.
  • Remind users not to visit un-trusted websites or follow links provided by unknown or un-trusted sources.
  • Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments especially from un-trusted sources.

 

REFERENCES:
Microsoft:

https://technet.microsoft.com/en-us/security/bulletin/ms14-008

CVE:

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0294