Description
Microsoft Excel 2002 SP3, Office 2004 and 2008 for Mac, and Open XML File Format Converter for Mac obtain a certain length value from an uninitialized memory location, which allows remote attackers to trigger a buffer overflow and execute arbitrary code via a crafted Excel file, aka "Excel Data Initialization Vulnerability."
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.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Metasploit 1 module
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MS11-021 Microsoft Office 2007 Excel .xlb Buffer Overflow
exploit/windows/fileformat/ms11_021_xlb_bof
Exploit-DB 1
- Microsoft Excel 2007 - '.xlb' Local Buffer Overflow (MS11-021) (Metasploit) EDB-18087 · local · Nov 5, 2011 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- TA11-102A third-party-advisory
- 39122 third-party-advisory
- 1025337 vdb-entry
- oval:org.mitre.oval:def:12618 vdb-entry signature
- MS11-021 vendor-advisory
- ADV-2011-0940 vdb-entry