Title: Microsoft Windows Hyperlink Object Library Buffer Overflow Vulnerability
Severity: CRITICAL
Description:
Microsoft Windows Hyperlink Object Library is a collection of application programming interfaces designed to facilitate the use of hyperlinks. A hyperlink is a COM object that acts as a link to an object at another location.
The Microsoft Windows Hyperlink Object Library is reported prone to a buffer overflow vulnerability. This issue arises because the application fails to perform boundary checks on user-supplied data prior to copying it into sensitive process buffers. An attacker may exploit this condition to execute arbitrary code on a vulnerable computer, which may grant unauthorized access to the computer or lead to privilege escalation.
It is reported that issue presents itself when a user follows a malformed link specially crafted by an attacker. To carry out this attack, the attacker must crate a link in a manner that is designed to supply excessive string data, replacement memory addresses and arbitrary machine code to the affected library. The attacker may host this link on a Web site or send it to a user through email followed by enticing the user to follow the link.
If the user follows the malicious link, the attacker's payload may be executed in the context of the user. This can allow the attacker to gain unauthorized access to the vulnerable computer.
Another remote attack vector may allow an attacker to supply a malicious payload to an application that employs the affected library. If an attacker can access an affected application remotely, they may be able to supply a malicious payload as a parameter that could be passed to the vulnerable component. A successful attack may grant unauthorized access to a vulnerable computer in the context of the affected application. It is conjectured that this attack would not require any interaction by a user.
Local attacker vectors exist to exploit this vulnerability as well. Reportedly, an attacker with local interactive access to a vulnerable computer may pass a malicious payload to an application that supplies parameters to the affected library. A successful attack can result in granting elevated privileges to an attacker in the context of the application.
Affected Products:
- Avaya DefinityOne Media Servers
- Avaya IP600 Media Servers
- Avaya S3400 Message Application Server
- Avaya S8100 Media Servers
- Microsoft Windows 2000 Advanced Server
- Microsoft Windows 2000 Advanced Server SP1
- Microsoft Windows 2000 Advanced Server SP2
- Microsoft Windows 2000 Advanced Server SP3
- Microsoft Windows 2000 Advanced Server SP4
- Microsoft Windows 2000 Datacenter Server
- Microsoft Windows 2000 Datacenter Server SP1
- Microsoft Windows 2000 Datacenter Server SP2
- Microsoft Windows 2000 Datacenter Server SP3
- Microsoft Windows 2000 Datacenter Server SP4
- Microsoft Windows 2000 Professional
- Microsoft Windows 2000 Professional SP1
- Microsoft Windows 2000 Professional SP2
- Microsoft Windows 2000 Professional SP3
- Microsoft Windows 2000 Professional SP4
- Microsoft Windows 2000 Server
- Microsoft Windows 2000 Server SP1
- Microsoft Windows 2000 Server SP2
- Microsoft Windows 2000 Server SP3
- Microsoft Windows 2000 Server SP4
- Microsoft Windows 2000 Terminal Services
- Microsoft Windows 2000 Terminal Services SP1
- Microsoft Windows 2000 Terminal Services SP2
- Microsoft Windows 98
- Microsoft Windows 98SE
- Microsoft Windows ME
- Microsoft Windows Server 2003 Datacenter Edition
- Microsoft Windows Server 2003 Datacenter Edition Itanium
- Microsoft Windows Server 2003 Enterprise Edition
- Microsoft Windows Server 2003 Enterprise Edition Itanium
- Microsoft Windows Server 2003 Standard Edition
- Microsoft Windows Server 2003 Web Edition
- Microsoft Windows XP 64-bit Edition
- Microsoft Windows XP 64-bit Edition SP1
- Microsoft Windows XP 64-bit Edition Version 2003
- Microsoft Windows XP Home
- Microsoft Windows XP Home SP1
- Microsoft Windows XP Home SP2
- Microsoft Windows XP Media Center Edition
- Microsoft Windows XP Media Center Edition SP1
- Microsoft Windows XP Media Center Edition SP2
- Microsoft Windows XP Professional
- Microsoft Windows XP Professional SP1
- Microsoft Windows XP Professional SP2
- Microsoft Windows XP Tablet PC Edition
- Microsoft Windows XP Tablet PC Edition SP1
- Microsoft Windows XP Tablet PC Edition SP2
- Nortel Networks IP softphone 2050
- Nortel Networks Mobile Voice Client 2050
- Nortel Networks Optivity Telephony Manager (OTM)
- Nortel Networks Symposium Call Center Server (SCCS)
- Nortel Networks Symposium Express Call Center (SECC)
References:
- Microsoft: Microsoft Security Bulletin MS05-015
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