Advisory Date:
March 14, 2006
REPORTED DATE:
January 24, 2006
Vendor:
Microsoft
Affected Products:
Microsoft Excel 2003 Chinese Version Windows XP Home Edition Chinese Version and Possible All Versions of Microsoft Excel.
SEVERITY:
HIGH
REFERENCE:
Http://www.microsoft.com/technet/security/bulletin/ms06-012.mspx http://cve.mitre.org/cgi-bin/cVename.cgi?name=cve-2006-0029 http: // Www.securityfocus.com/bid/15780
Description: Fortinet Security Research Team (FSRT) has discovered a Improper Stack Overflow Vulnerability in the Microsoft Excel software This vulnerability is due to Microsoft Excel's manipulation of opcode 0x0218, when provided with a large Formula Size, it will cause a stack overflow An.. remote attacker could construct a .xls file and put it on controlled web site. When the user opens the .xls file with Microsoft Internet Explorer, the browser will call Microsoft Excel to open the .xls file automatically, and this will cause Microsoft Excel to crash If excel file is specially crafted, it may allow attackers to execute arbitrary code on the affected system Impact:.. Execution of arbitrary code leading to system compromise Solution:. Microsoft has released a update for this vulnerability, which is available for downloading from Microsoft Web Site, See Reference: Dejun Meng of Fortinet Security Research Team Found this VulneRability. Disclaimer Although Fortinet has attempted to provide accurate information in these materials, Fortinet assumes no legal responsibility for the accuracy or completeness of the information. More specific information is available on request from Fortinet. Please note that Fortinet's product information does not constitute or contain any guarantee, warranty or Legally binding representation, unless ASSSSSSSSSSSSSSS SUCH IN A DULY SIGNED Writing.FortiProtect Bulletin
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ZDI-06-004 Microsoft Excel File Format Parsing Vulnerability
March 14, 2006
CVE ID: CVE-2006-0028
Affected Vendor: Microsoft
Affected Products: Office 2000Office Xpoffice 2003
TippingPointTM IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability since February 21, 2006 by Digital Vaccine protection filter ID 4156. For further product information on the TippingPoint IPS: www.tippingpoint.com
Vulnerability Details: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Office Exploitation requires that the attacker coerce the target into opening a malicious .XLS file.The specific flaw exists within the parsing of the BIFF file format used by Microsoft. Excel. DURING The Processing of Malformed Boolerr RECORDS, User-Supplied Data May Be INSecurely Reference Thereby Leading to the eventual Execution of Arbitrary Code.
Vendor Response: Microsoft has addressed this issue in Microsoft security bulletin MS06-012 titled "Vulnerabilities in Microsoft Office Could Allow Remote Code Execution": http: //www.microsoft.com/technet/security/bulletin/ms06-012.mspx
Disclosure Timeline:
2006.01.24? / Td> Vulnerability reported to vendor2006.02.21? / Td> Digital Vaccine released to TippingPoint customers2006.03.13? / Td> Vulnerability information provided to ZDI security partners2006.03.14? / Td> Coordinated public release of advisory
Credit: this Vulnerability Was Discovered by Arnaud Dovi Aka 'Class101', http://heapoverflow.com.
About the Zero Day Initiative (ZDI): Established by TippingPoint, a division of 3Com, The Zero Day Initiative (ZDI) represents a best-of-breed model for rewarding security researchers for responsibly disclosing discovered vulnerabilities.
Researches INTERESTED IN Getting Paid for their security research through the zdi can find more information and sign-up at:
www.zerodayinitiative.comThe ZDI is unique in how the acquired vulnerability information is used. 3Com does not re-sell the vulnerability details or any exploit code. Instead, upon notifying the affected product vendor, 3Com provides its customers with zero day protection through its intrusion prevention technology. Explicit details regarding the specifics of the vulnerability are not exposed to any parties until an official vendor patch is publicly available. Furthermore, with the altruistic aim of helping to secure a broader user base, 3Com provides this vulnerability information confidentially to security Vendors (Including Competitors) Who Have A Vulnerability Protection Or Mitigation Product.
