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TITLE:
Microsoft Office Excel Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA44901

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/44901/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=44901

RELEASE DATE:
2011-06-15

DISCUSS ADVISORY:
http://secunia.com/advisories/44901/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/44901/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=44901

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
Multiple vulnerabilities have been reported in Microsoft Office
Excel, which can be exploited by malicious people to compromise a
user's system.

1) An input validation error when parsing certain record structures
can be exploited to corrupt memory.

2) An unspecified error when validating certain record information
can be exploited to corrupt memory.

3) An unspecified error when validating certain record information
can be exploited to access data outside the bounds of an array and
corrupt memory.

4) An unspecified error when validating certain record information
can be exploited to overwrite heap memory.

5) An unspecified error when validating certain record information
can be exploited to cause a buffer overflow.

6) An unspecified error when validating certain record information
can be exploited to corrupt memory.

7) An unspecified error when validating certain record information
can be exploited to corrupt memory.

8) An unspecified error when validating certain record information
can be exploited to corrupt memory.

Successful exploitation allows execution of arbitrary code via
specially crafted Excel files.

SOLUTION:
Apply patches.

Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

PROVIDED AND/OR DISCOVERED BY:
The vendor credits:
1) Bing Liu, Fortinet's FortiGuard Labs.
2, 4) An anonymous person via iDefense.
3, 6) Omair via iDefense.
5) Nicolas Gregoire, Agarri.
7, 8) Will Dormann, CERT/CC.

ORIGINAL ADVISORY:
MS11-045 (KB2537146, KB2541003, KB2541025, KB2541007, KB2555786,
KB2555785, KB2555787, KB2541015, KB2541012):
http://www.microsoft.com/technet/security/Bulletin/MS11-045.mspx

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

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Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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