Microsoft Excel 2000/2002/2003/2007 Active Worksheet memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Microsoft Excel 2000/2002/2003/2007. The impacted element is an unknown function of the component Active Worksheet Handler. This manipulation causes memory corruption. This vulnerability is registered as CVE-2007-1756. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Microsoft Excel 2000/2002/2003/2007 (Spreadsheet Software). It has been declared as critical. Affected by this vulnerability is an unknown code of the component Active Worksheet Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Microsoft Excel 2000 SP3, 2002 SP3, 2003 SP2, 2003 Viewer, and Office Excel 2007 does not properly validate version information, which allows user-assisted remote attackers to execute arbitrary code via a crafted Excel file, aka "Calculation Error Vulnerability".

The weakness was published 07/10/2007 with Microsoft as MS07-036 as confirmed bulletin (Technet). It is possible to read the advisory at microsoft.com. This vulnerability is known as CVE-2007-1756 since 03/29/2007. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 25687 (MS07-036: Vulnerabilities in Microsoft Excel Could Allow Remote Code Execution (936542)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 110062 (Microsoft Excel Could Allow Remote Code Execution Vulnerabilities (MS07-036)).

Upgrading eliminates this vulnerability. Applying the patch MS07-036 is able to eliminate this problem. The bugfix is ready for download at microsoft.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 12070.

The vulnerability is also documented in the databases at X-Force (35210), Tenable (25687), SecurityFocus (BID 24801†), OSVDB (35957†) and Secunia (SA25995†). Similar entries are available at VDB-3176, VDB-3174, VDB-37739 and VDB-37738. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 25687
Nessus Name: MS07-036: Vulnerabilities in Microsoft Excel Could Allow Remote Code Execution (936542)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: MS07-036

Snort ID: 12070

Timelineinfo

03/29/2007 🔍
07/06/2007 +99 days 🔍
07/10/2007 +4 days 🔍
07/10/2007 +0 days 🔍
07/10/2007 +0 days 🔍
07/10/2007 +0 days 🔍
07/10/2007 +0 days 🔍
07/10/2007 +0 days 🔍
07/10/2007 +0 days 🔍
07/18/2007 +7 days 🔍
04/28/2019 +4302 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS07-036
Organization: Microsoft
Status: Confirmed

CVE: CVE-2007-1756 (🔍)
GCVE (CVE): GCVE-0-2007-1756
GCVE (VulDB): GCVE-100-3175

OVAL: 🔍

X-Force: 35210
SecurityFocus: 24801 - Microsoft Excel Version Information Validation Remote Code Execution Vulnerability
Secunia: 25995 - Microsoft Excel Multiple Code Execution Vulnerabilities, Highly Critical
OSVDB: 35957 - Microsoft Excel Version Information Validation Crafted File Arbitrary Code Execution
SecurityTracker: 1018352
Vupen: ADV-2007-2478

See also: 🔍

Entryinfo

Created: 07/18/2007 16:23
Updated: 04/28/2019 06:19
Changes: 07/18/2007 16:23 (89), 04/28/2019 06:19 (1)
Complete: 🔍
Cache ID: 216::103

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