Microsoft Exchange MIME base64 code execution
| exchange-mime-base64-code-execution (33889) |  High Risk |
Description:
Microsoft Exchange could allow a remote attacker to execute arbitrary code on the system, caused by improper decoding of MIME base64-encoded content. An attacker could exploit this vulnerability by sending a specially-crafted email to a user account on the server to execute arbitrary code on the system with the victim's privileges, once the email is opened.
*CVSS:
| Base Score: | 8 |
| Access Vector: | Remote |
| Access Complexity: | High |
| Authentication: | Not Required |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 5.9 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
Remedy:
Apply the appropriate patch for your system, as listed in the latest Microsoft Security Bulletin. See References.
— OR —
Use Microsoft Automatic Update if it is supported by your operating system. The original bulletin issued by Microsoft has been superseded.
References:
- IBM Internet Security Systems Protection Alert, May 8, 2007: Microsoft Exchange MIME base64 code execution.
- Microsoft Security Bulletin MS07-026: Vulnerabilities in Microsoft Exchange Could Allow Remote Code Execution (931832).
- Microsoft Security Bulletin MS08-039: Vulnerabilities in Outlook Web Access for Exchange Server Could Allow Elevation of Privilege (953747).
- Microsoft Security Bulletin MS09-003: Vulnerabilities in Microsoft Exchange Could Allow Remote Code Execution (959239).
- NORTEL BULLETIN ID: 2008008958, Rev 1: Centrex IP Client Manager (CICM) response to Microsoft July security bulletin .
- ASA-2007-191: MS07-026 Vulnerabilities in Microsoft Exchange Could Allow Remote Code Execution (931832)
- BID-23809: Microsoft Exchange Base64 MIME Message Remote Code Execution Vulnerability
- CVE-2007-0213: Microsoft Exchange Server 2000 SP3, 2003 SP1 and SP2, and 2007 does not properly decode certain MIME encoded e-mails, which allows remote attackers to execute arbitrary code via a crafted base64-encoded MIME e-mail message.
- OSVDB ID: 34391: Microsoft Exchange Server MIME Decoding Remote Code Execution
- SA25183: Microsoft Exchange Multiple Vulnerabilities
- SECTRACK ID: 1018015: Microsoft Exchange Base64, iCal, IMAP, and Attachment Processing Bugs Let Remote Users Deny Service or Execute Arbitrary Code
- US-CERT VU#343145: Microsoft Exchange Server fails to properly decode MIME email messages
- VUPEN/ADV-2007-1711: Microsoft Exchange Code Execution and Denial of Service Vulnerabilities (MS07-026)
Platforms Affected:
- Microsoft Exchange Server 2000 SP3
- Microsoft Exchange Server 2003 SP2
- Microsoft Exchange Server 2003 SP1
- Microsoft Exchange Server 2007
- Microsoft Windows Vista
Reported:
May 08, 2007
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For corrections or additions please email xforce@iss.net
* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.