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TITLE:
Microsoft Office Excel Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA49112

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/49112/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=49112

RELEASE DATE:
2012-05-08

DISCUSS ADVISORY:
http://secunia.com/advisories/49112/#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/49112/

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=49112

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 error when validating certain data within Excel files can be
exploited to corrupt memory.

2) An error when handling the OBJECTLINK record within Excel files
can be exploited to corrupt memory.

3) An error when validating certain data within Excel files can be
exploited to corrupt memory.

4) An error when handling the SXLI record within Excel files can be
exploited to corrupt memory.

5) An error when handling the MergeCells record within Excel files
can be exploited to cause a heap-based buffer overflow.

6) A type mismatch error when handling the Series record within Excel
files can be exploited to corrupt memory.

Successful exploitation of the vulnerabilities allows execution of
arbitrary code, but requires tricking a user into opening a malicious
file.

SOLUTION:
Apply patches.

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

PROVIDED AND/OR DISCOVERED BY:
The vendor credits the following people:
1, 2) Omair
4) Omair via iDefense
5, 6) Sean Larsson and Jun Mao via iDefense
6) An anonymous person via ZDI

ORIGINAL ADVISORY:
MS12-030 (KB2553371, KB2596842, KB2597086, KB2597161, KB2597162,
KB2597166, KB2597969, KB2665346, KB2665351):
http://technet.microsoft.com/en-us/security/bulletin/ms12-030

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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