Microsoft Windows Help winhlp32.exe heap-based overflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.0	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Microsoft Windows. This affects an unknown part of the file winhlp32.exe of the component Help. The manipulation leads to heap-based overflow. This vulnerability is documented as CVE-2006-1591. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Microsoft Windows (Operating System) (affected version unknown) and classified as critical. This issue affects an unknown functionality of the file winhlp32.exe of the component Help. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Heap-based buffer overflow in Microsoft Windows Help winhlp32.exe allows user-assisted attackers to execute arbitrary code via crafted embedded image data in a .hlp file.

The weakness was released 04/03/2006 by c0ntex (Website). It is possible to read the advisory at securityfocus.com. The identification of this vulnerability is CVE-2006-1591 since 04/02/2006. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading eliminates this vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 12332.

The vulnerability is also documented in the databases at X-Force (25573), SecurityFocus (BID 17325†) and Vulnerability Center (SBV-40930†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Operating System

Vendor

Microsoft

Name

Windows

License

commercial

Website

Vendor: https://www.microsoft.com/
Product: https://www.microsoft.com/en-us/windows

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
TippingPoint: 🔍
ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

03/31/2006 🔍
03/31/2006 +0 days 🔍
04/02/2006 +2 days 🔍
04/03/2006 +1 days 🔍
04/03/2006 +0 days 🔍
08/08/2013 +2683 days 🔍
03/12/2015 +581 days 🔍
09/17/2018 +1285 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: securityfocus.com⛔
Researcher: c0ntex
Status: Not defined

CVE: CVE-2006-1591 (🔍)
GCVE (CVE): GCVE-0-2006-1591
GCVE (VulDB): GCVE-100-29471
X-Force: 25573
SecurityFocus: 17325 - Microsoft Windows Help Image Processing Heap Overflow Vulnerability
Vulnerability Center: 40930 - Microsoft Windows 2000, Server 2003 and NT Heap-Based Buffer Overflow Allows Remote Code Execution via a Help (.hlp) File, Critical

Entryinfo

Created: 03/12/2015 12:19
Updated: 09/17/2018 08:12
Changes: 03/12/2015 12:19 (53), 09/17/2018 08:12 (11)
Complete: 🔍
Cache ID: 216::103