Description
MSO.DLL in Microsoft Office 2000, Office XP (2002), and Office 2003 allows user-assisted attackers to cause a denial of service and execute arbitrary code via multiple attack vectors, as originally demonstrated using a crafted document record with a malformed string, as demonstrated by replacing a certain "01 00 00 00" byte sequence with an "FF FF FF FF" byte sequence, possibly causing an invalid array index, in (1) an Excel .xls document, which triggers an access violation in ole32.dll; (2) an Excel .xlw document, which triggers an access violation in excel.exe; (3) a Word document, which triggers an access violation in mso.dll in winword.exe; and (4) a PowerPoint document, which triggers an access violation in powerpnt.txt. NOTE: after the initial disclosure, this issue was demonstrated by triggering an integer overflow using an inconsistent size for a Unicode "Sheet Name" string.
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 Office Products - Array Index Bounds Error (PoC) EDB-1615 · dos · Mar 27, 2006 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 20060710 SYMSA-2006-007: Microsoft Office Malformed String Parsing Vulnerability mailing-list
- 21012 third-party-advisory
- ADV-2006-2756 vdb-entry
- MS06-038 vendor-advisory
- VU#609868 third-party-advisory
- office-string-parse-bo(27607) vdb-entry
- office-property-string-bo(27609) vdb-entry
- 17252 vdb-entry
- 18889 vdb-entry
- TA06-192A third-party-advisory
- 27150 vdb-entry
- oval:org.mitre.oval:def:639 vdb-entry signature
- 1615 exploit
- 1015855 vdb-entry