MS12-076 - Vulnerabilities in Microsoft Excel Could Allow Remote Code Execution (2720184)

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Details
Vulnerability name/brief description MS12-076 - Vulnerabilities in Microsoft Excel Could Allow Remote Code Execution (2720184)
CVE/CAN name
Vendor threat level Important
SophosLabs threat level High
Solution MS12-076
Vendor description This security update resolves four privately reported vulnerabilities in Microsoft Office. The vulnerabilities could allow remote code execution if a user opens a specially crafted Excel file with an affected version of Microsoft Excel. An attacker who successfully exploited this vulnerability could gain the same user rights as the current user. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.
SophosLabs comments This is a cumulative fix for vulnerabilities in MS Excel. The vulnerabilities all lie in how Excel parses different records. Attack vectors used to exploit this vulnerability include: targeted emails and websites using social engineering enticing users to open maliciously crafted Excel documents.
SophosLabs testing result No SophosLabs testing result found
Currently known exploits No currently known exploits found
First sample seen No samples found
Discovery date 13 Nov 2012
Affected software Microsoft Office 2003 Service Pack 3 Microsoft Excel 2003 Service Pack 3
Microsoft Office 2007 Service Pack 2 Microsoft Excel 2007 Service Pack 2
Microsoft Office 2007 Service Pack 3 Microsoft Excel 2007 Service Pack 3
Microsoft Office 2010 Service Pack 1 (32-bit editions) Microsoft Excel 2010 Service Pack 1 (32-bit editions)
Microsoft Office 2010 Service Pack 1 (64-bit editions) Microsoft Excel 2010 Service Pack 1 (64-bit editions)
Microsoft Office for Mac
Microsoft Office 2008 for Mac
Microsoft Office for Mac 2011
Microsoft Excel Viewer
Microsoft Office Compatibility Pack Service Pack 2
Microsoft Office Compatibility Pack Service Pack 3
References
Credits
  • MAPP
Revisions
  • Nov 13, 2012 - Initial analysis written

Explanation of terms

Vulnerability Name/Brief Description:

Vendor identifier plus a brief description of the type of attack.

CVE/CAN Name:

Currently assigned CVE name. If a CVE name doesn't exist the CAN name will be used until a CVE has been assigned.

Vendor Threat Level:

Threat level assigned by the vendor

SophosLabs Threat Level:

Threat level assigned by SophosLabs

  • LOW RISK - There is little chance of this vulnerability being actively exploited by malware.
  • MEDIUM RISK - There is a possibility of this vulnerability being actively exploited by malware.
  • HIGH RISK - There is a strong possibility of this vulnerability being actively exploited by malware.
  • CRITICAL RISK - This vulnerability will almost certainly be actively exploited by malware.

Solution:

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Vendor Description:

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SophosLabs Comments:

SophosLabs' opinions and observations of the vulnerability in question.

SophosLabs Testing Result:

Details of completed lab testing, if applicable. Please note that the lab test environment may differ significantly from user environments.

Currently Known Exploits:

List of identities for known exploits, if applicable.

First Sample Seen:

Date of the first sample seen by SophosLabs.

Discovery Date:

Date of the earliest known publically disclosed advisory.

Affected Software:

Vulnerable platforms and software versions.