MS-ISAC ADVISORY NUMBER:
2010-050
DATE(S) ISSUED:
7/13/2010
SUBJECT:
Vulnerability in Microsoft Office Outlook Could Allow Remote Code Execution (MS10-045)
A vulnerability has been identified in Microsoft Office Outlook. Microsoft Office Outlook is an email client. Exploitation of this vulnerability requires that a user open an attachment in a specially crafted e-mail message with a vulnerable version of Microsoft Office Outlook. Successful exploitation of the vulnerability could allow an attacker to gain 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.
SYSTEMS AFFECTED:
- Microsoft Office XP
- Microsoft Office 2003
- 2007 Microsoft Office System
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
DESCRIPTION:
A vulnerability has been identified in Microsoft Office Outlook which may allow an attacker to take complete control of an affected system. This vulnerability is caused by an error when processing file attachments which are attached using the ATTACH_BY_REFERENCE value of the PR_ATTACH_METHOD property in a specially crafted e-mail message. Exploitation of this vulnerability requires that a user open an attachment in a specially crafted e-mail message with a vulnerable version of Microsoft Office Outlook. Successful exploitation of the vulnerability could allow an attacker to gain 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.
RECOMMENDATIONS:
We recommend the following actions be taken:
- Apply appropriate patches provided by Microsoft to vulnerable systems immediately after appropriate testing.
- Remind users not to open e-mail attachments from unknown users or suspicious e-mails from trusted sources.
REFERENCES:
Microsoft:
http://www.microsoft.com/technet/security/bulletin/ms10-045.mspx
http://blogs.technet.com/b/srd/archive/2010/07/13/ms10-045-microsoft-office-outlook-remote-code-execution-vulnerability.aspx
VUPEN:
http://www.vupen.com/english/advisories/2010/1800
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-0266