Microsoft Excel Viewer 3.x OCX ActiveX Control stack-based overflow

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

Summaryinfo

A vulnerability labeled as critical has been found in Microsoft Excel Viewer 3.x. Affected by this issue is some unknown functionality of the component OCX ActiveX Control. The manipulation results in stack-based overflow. This vulnerability was named CVE-2007-2495. In addition, an exploit is available. You should disable the affected component.

Detailsinfo

A vulnerability was found in Microsoft Excel Viewer 3.x (Spreadsheet Software). It has been classified as critical. Affected is an unknown part of the component OCX ActiveX Control. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Multiple stack-based buffer overflows in the ExcelOCX ActiveX control in ExcelViewer.ocx 3.1.0.6 allow remote attackers to cause a denial of service (Internet Explorer 7 crash) via a long (1) DoOleCommand, (2) FTPDownloadFile, (3) FTPUploadFile, (4) HttpUploadFile, (5) Save, (6) SaveWebFile, (7) HttpDownloadFile, (8) Open, or (9) OpenWebFile property value. NOTE: some of these details are obtained from third party information.

The weakness was presented 05/02/2007 by shinnai (Website). The advisory is shared for download at moaxb.blogspot.com. This vulnerability is traded as CVE-2007-2495 since 05/03/2007. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but a public exploit is available.

A public exploit has been developed by shinnai and been published immediately after the advisory. The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $100k and more.

The best possible mitigation is suggested to be disabling the affected component. Attack attempts may be identified with Snort ID 11181.

The vulnerability is also documented in the databases at X-Force (34011), Exploit-DB (3830), SecurityFocus (BID 23755†), OSVDB (34333†) and Secunia (SA25077†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.4

VulDB Base Score: 7.3
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: shinnai
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Disable
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍
Snort ID: 11181

Timelineinfo

05/02/2007 🔍
05/02/2007 +0 days 🔍
05/02/2007 +0 days 🔍
05/02/2007 +0 days 🔍
05/02/2007 +0 days 🔍
05/03/2007 +0 days 🔍
05/03/2007 +0 days 🔍
05/10/2007 +7 days 🔍
09/10/2024 +6333 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: moaxb.blogspot.com
Researcher: shinnai
Status: Not defined

CVE: CVE-2007-2495 (🔍)
GCVE (CVE): GCVE-0-2007-2495
GCVE (VulDB): GCVE-100-3048
X-Force: 34011 - Office Excel Viewer OCX ExcelViewer.ocx ActiveX buffer overflow, High Risk
SecurityFocus: 23755 - Office OCX ExcelViewer.OCX Excel Viewer ActiveX Denial of Service Vulnerabilities
Secunia: 25077 - Excel Viewer OCX ActiveX Control Buffer Overflow Vulnerabilities, Highly Critical
OSVDB: 34333 - Excel Viewer OCX ActiveX (ExcelViewer.ocx) Multiple Method Overflows
Vupen: ADV-2007-1613

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/10/2007 14:09
Updated: 09/10/2024 05:25
Changes: 05/10/2007 14:09 (79), 09/10/2024 05:25 (19)
Complete: 🔍
Cache ID: 216:FAC:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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