Microsoft Word up to 2003 backdoor

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CTI Interest Score
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6.9$0-$5k0.00

A vulnerability, which was classified as critical, was found in Microsoft Word up to 2003 (Word Processing Software). This affects some unknown processing. The manipulation with an unknown input leads to a backdoor vulnerability. CWE is classifying the issue as CWE-912. The product contains functionality that is not documented, not part of the specification, and not accessible through an interface or command sequence that is obvious to the product's users or administrators. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in Microsoft Word in Office 2000 SP3, Office XP SP3, Office 2003 Sp1 and SP2, and Microsoft Works Suites through 2006, allows user-assisted attackers to execute arbitrary code via a malformed object pointer, as originally reported by ISC on 20060519 for a zero-day attack.

The weakness was presented 05/19/2006 by Shih-hao Weng with SANS (Website). The advisory is shared at isc.sans.org. This vulnerability is uniquely identified as CVE-2006-2492 since 05/19/2006. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but an exploit is available. MITRE ATT&CK project uses the attack technique T1588.001 for this issue.

The exploit is shared for download at immunitysec.com. 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 21690 (MS06-027: Vulnerabilities in Microsoft Word Could Allow Remote Code Execution (917336)), 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.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at windowsupdate.microsoft.com. The problem might be mitigated by replacing the product with as an alternative. The best possible mitigation is suggested to be establishing an alternative product. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (26556) and Tenable (21690). See 82, 332, 333 and 427 for similar entries.

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CPE 2.3info

CPE 2.2info

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CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.9

VulDB Base Score: 7.3
VulDB Temp Score: 6.9
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CVSSv2info

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Exploitinginfo

Class: Backdoor
CWE: CWE-912
ATT&CK: T1588.001

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept
Download: 🔍

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Nessus ID: 21690
Nessus Name: MS06-027: Vulnerabilities in Microsoft Word Could Allow Remote Code Execution (917336)
Nessus File: 🔍
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Alternative
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Patch: windowsupdate.microsoft.com

Timelineinfo

05/19/2006 🔍
05/19/2006 +0 days 🔍
05/19/2006 +0 days 🔍
05/19/2006 +0 days 🔍
05/19/2006 +0 days 🔍
05/19/2006 +0 days 🔍
05/22/2006 +2 days 🔍
06/13/2006 +22 days 🔍
07/12/2006 +29 days 🔍
04/27/2019 +4672 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: isc.sans.org
Researcher: Shih-hao Weng
Organization: SANS
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-2492 (🔍)
OVAL: 🔍

X-Force: 26556 - Microsoft Word document handling buffer overflow, High Risk
SecurityTracker: 1016130
SecurityFocus: 18037 - Microsoft Word Malformed Object Pointer Remote Code Execution Vulnerability
Secunia: 20153 - Microsoft Word Malformed Object Pointer Vulnerability, Extremely Critical
OSVDB: 25635 - Microsoft Word Unspecified Code Execution
Vupen: ADV-2006-1872

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Entryinfo

Created: 05/22/2006 12:05
Updated: 04/27/2019 20:51
Changes: 05/22/2006 12:05 (86), 04/27/2019 20:51 (5)
Complete: 🔍

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