Description
Buffer overflow in certain Asian language versions of Microsoft Excel might allow user-assisted attackers to execute arbitrary code via a crafted STYLE record in a spreadsheet that triggers the overflow when the user attempts to repair the document or selects the "Style" option, as demonstrated by nanika.xls. NOTE: Microsoft has confirmed to CVE via e-mail that this is different than the other Excel vulnerabilities announced before 20060707, including CVE-2006-3059 and CVE-2006-3086.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Exploit-DB 1
- Microsoft Excel 2000-2004 - Style Handling and Repair Remote Code Execution EDB-28189 · remote · Jul 6, 2006 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 20060707 Major updates to Excel 0-day Vulnerability FAQ at SecuriTeam Blogs mailing-list
- SSRT061264 vendor-advisory
- 20268 third-party-advisory
- MS06-059 vendor-advisory
- oval:org.mitre.oval:def:431 vdb-entry signature
- 1016430 vdb-entry
- 20060711 New CVE number states Excel Style handling as a separate issue mailing-list
- 18872 vdb-entry
- ADV-2006-2689 vdb-entry
- 20060703 Excel 2000/XP/2003 Style 0day POC mailing-list