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NSFOCUS SA2006-06 : Microsoft Excel COLINFO Record Buffer Overflow Vulnerability
From: NSFOCUS Security Team <security () nsfocus com>
Date: Wed, 12 Jul 2006 15:43:48 +0800
NSFOCUS Security Advisory (SA2006-06)
Microsoft Excel COLINFO Record Buffer Overflow Vulnerability
Release Date: 2006-07-12
CVE ID: CVE-2006-1304
Affected systems & software
Microsoft Excel 2000
Microsoft Excel 2002
Microsoft Excel 2003
Unaffected systems & software
NSFocus Security Team discovered a buffer overflow vulnerability in Microsoft Excel's
processing of COLINFO record, which allows remote attackers to run arbitrary via
carefully crafted Excel files.
Excel does not perform sufficient check for certain field when processing
COLINFO record, which might cause a buffer overflow vulnerability in data filling
operation. Attackers can run arbitrary via carefully craft data.
Attackers can craft an Excel file with malformed COLINFO record and allure
users to open it via instant messaging tools, e-mail or other vectors, resulting
in arbitrary code execution with the privilege of the user. If the user is
the administrator, then attackers might take complete control over the system.
Do not open any Excel file from untrusted sources.
2006.03.30 Informed the vendor
2006.04.03 Vendor confirmed the vulnerability
2006.07.11 Microsoft has released a security bulletin (MS06-037) and related
For more details about the security bulletin, please refer to:
The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2006-1304 to this issue. This is a candidate for inclusion in the
CVE list (http://cve.mitre.org), which standardizes names for security problems.
Candidates may change significantly before they become official CVE entries.
Wen Yujie of NSFocus Security Team found the vulnerability.
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NSFOCUS Security Team <security () nsfocus com>
NSFOCUS INFORMATION TECHNOLOGY CO.,LTD
PGP Key: http://www.nsfocus.com/homepage/research/pgpkey.asc
Key fingerprint = F8F2 F5D1 EF74 E08C 02FE 1B90 D7BF 7877 C6A6 F6DA
- NSFOCUS SA2006-06 : Microsoft Excel COLINFO Record Buffer Overflow Vulnerability NSFOCUS Security Team (Jul 12)