Check Point Advisories

MS Outlook iCal Meeting Request VEVENT Record Memory Corruption (MS07-003; CVE-2007-0033)

Vulnerability
Protection

Check Point Reference:	CPAI-2007-214
Date Published:	17 Nov 2009
Severity:	High
Last Updated:	Tuesday 09 December, 2014
Source:
Industry Reference:	CVE-2007-0033
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	Microsoft provides server and client side implementations of email protocols such as SMTP, POP3 and IMAP. The widely used Microsoft Outlook product is an implementation of an email client capable of handling most standard Internet protocols as well as numerous proprietary Microsoft protocols and formats. One such Internet standard that is fully supasdasdported by Outlook is the iCalendar standard used for calendar data exchange. There exists a memory corruption vulnerability in Microsoft Outlook. The flaw is caused by insufficient checks while parsing VEVENT record in the Outlook iCal meeting request file or .ICS file. A remote attacker can exploit this vulnerability by enticing the target user to open a crafted iCal file or .ICS file, potentially causing arbitrary code to be injected and executed in the security context of the current user. In an attack case where code injection is not successful, all instances of the vulnerable application will terminate. In a more sophisticated attack, where code injection is successful, the behaviour of the target is entirely dependent on the intended function of the injected code. The code in such a case would execute within the security context of the current user.

Protection Overview

This protection will detect and block attempts to transfer malicious ICS files that exploit this vulnerability, either by mail or by web.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

In the IPS tab, click Protections and find the MS Outlook iCal Meeting Request VEVENT Record Memory Corruption (MS07-003) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: NNTP Protection Violation.
Attack Information: MS Outlook iCal meeting request VEVENT record memory corruption (MS07-003)