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6.4	$0-$5k	0.00

A vulnerability was found in Microsoft Word Viewer 3.x (Word Processing Software). It has been rated as critical. Affected by this issue is an unknown code block of the component OCX ActiveX Control. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The WordOCX ActiveX control in WordViewer.ocx 3.2.0.5 allows remote attackers to cause a denial of service (Internet Explorer 7 crash) via a long (1) DoOleCommand, (2) FTPDownloadFile, (3) FTPUploadFile, (4) HttpUploadFile, (5) GotoPage, (6) Save, (7) SaveWebFile, (8) HttpDownloadFile, (9) Open, (10) OpenWebFile, (11) SaveAs, or (12) ShowWordStandardDialog property value.

The weakness was published 05/02/2007 by shinnai (Website). The advisory is available at moaxb.blogspot.com. This vulnerability is handled as CVE-2007-2496 since 05/03/2007. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed by shinnai and been published 1 days after the advisory. The exploit is available 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 11187.

The vulnerability is also documented in the databases at X-Force (34027) and Exploit-DB (3836).

Productinfo

Type

• Word Processing Software

Vendor

• Microsoft

Name

• Word Viewer

Version

• 3.x

License

• commercial

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

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

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Disable
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍
Snort ID: 11187

Timelineinfo

05/02/2007 🔍
05/03/2007 +1 days 🔍
05/03/2007 +0 days 🔍
05/03/2007 +0 days 🔍
05/03/2007 +0 days 🔍
05/03/2007 +0 days 🔍
05/03/2007 +0 days 🔍
05/03/2007 +0 days 🔍
05/10/2007 +6 days 🔍
03/29/2019 +4341 days 🔍

Sourcesinfo

Vendor: microsoft.com

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

CVE: CVE-2007-2496 (🔍)
X-Force: 34027 - Office Word Viewer WordViewer.ocx ActiveX control buffer overflow, High Risk
SecurityFocus: 23784
Secunia: 25100 - Word Viewer OCX ActiveX Control Buffer Overflow Vulnerabilities, Highly Critical
OSVDB: 34334 - Word Viewer OCX ActiveX (WordViewer.ocx) Multiple Method Overflows
Vupen: ADV-2007-1634

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

Entryinfo

Created: 05/10/2007 14:18
Updated: 03/29/2019 16:01
Changes: 05/10/2007 14:18 (79), 03/29/2019 16:01 (1)
Complete: 🔍

Discussion

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