Microsoft Internet Explorer HTML Objects Script Errors Variant Remote Code Execution Vulnerability

ID SMNTC-23770
Type symantec
Reporter Symantec Security Response
Modified 2007-05-08T00:00:00



Microsoft Internet Explorer is prone to a remote code-execution vulnerability. This vulnerability is related to how the browser handles script errors in certain situations. An attacker could exploit this issue to execute arbitrary code in the context of the user running the affected browser. This issue affects Internet Explorer 7 running on Windows XP SP2, Windows Server 2003 SP1 and SP2, and on Windows Vista. Microsoft states that this vulnerability is a variant of the issue discussed in BID 23772 (Microsoft Internet Explorer HTML Objects Script Errors Remote Code Execution Vulnerability).

Technologies Affected

  • Avaya Agent Access
  • Avaya Basic Call Management System Reporting Desktop
  • Avaya Basic Call Management System Reporting Desktop server
  • Avaya CIE 1.0
  • Avaya CMS Supervisor
  • Avaya CVLAN
  • Avaya Computer Telephony
  • Avaya Contact Center Express
  • Avaya Enterprise Management
  • Avaya IP Agent
  • Avaya IP Softphone
  • Avaya Integrated Management 2.1.0
  • Avaya Integrated Management
  • Avaya Interaction Center - Voice Quick Start
  • Avaya Interaction Center
  • Avaya Messaging Application Server
  • Avaya Messaging Application Server MM 2.0
  • Avaya Messaging Application Server MM 3.0
  • Avaya Messaging Application Server MM 3.1
  • Avaya Modular Messaging (MAS) 3.0.0
  • Avaya Modular Messaging (MAS)
  • Avaya Modular Messaging (MSS) 1.1.0
  • Avaya Modular Messaging (MSS) 2.0.0
  • Avaya Modular Messaging (MSS) 2.0.0 SP4
  • Avaya Modular Messaging S3400
  • Avaya Network Reporting
  • Avaya OctelAccess(r) Server
  • Avaya OctelDesignerTM
  • Avaya Operational Analyst
  • Avaya Outbound Contact Management
  • Avaya Speech Access
  • Avaya Unified Communication Center
  • Avaya Unified Communications Center S3400
  • Avaya Unified Messenger (r)
  • Avaya VPNmanagerTM Console
  • Avaya Visual Messenger TM
  • Avaya Visual Vector Client
  • Avaya Web Messenger
  • HP Storage Management Appliance 2.1
  • Microsoft Internet Explorer 7.0
  • Microsoft Internet Explorer 7.0 beta1
  • Microsoft Internet Explorer 7.0 beta2
  • Microsoft Internet Explorer 7.0 beta3
  • Microsoft Internet Explorer 7.0.5730.11
  • Nortel Networks CallPilot 1002rp
  • Nortel Networks CallPilot 200i
  • Nortel Networks CallPilot 201i
  • Nortel Networks CallPilot 702t
  • Nortel Networks CallPilot 703t
  • Nortel Networks Centrex IP Client Manager
  • Nortel Networks Contact Center - Symposium Agent
  • Nortel Networks Contact Center
  • Nortel Networks Contact Center Administration
  • Nortel Networks Contact Center Express
  • Nortel Networks Contact Center Manager
  • Nortel Networks Contact Center Manager Server
  • Nortel Networks Contact Center Multimedia
  • Nortel Networks Contact Center Web Client


Run all software as a nonprivileged user with minimal access rights.
To reduce the impact of latent vulnerabilities, always run non-administrative software as an unprivileged user with minimal access rights.

Do not follow links provided by unknown or untrusted sources.
Attackers could exploit this vulnerability by enticing a user to visit a malicious website. Do not follow links provided by sources of questionable integrity.

Set web browser security to disable the execution of script code or active content.
Users should disable support for script code and active content within a client browser to reduce the chances of a successful exploit . Note that this mitigation tactic might adversely affect legitimate websites that rely on the execution of browser-based script code.

Implement multiple redundant layers of security.
Since this issue may be leveraged to execute code, we recommend memory-protection schemes, such as non-executable stack/heap configurations and randomly mapped memory segments. This tactic may complicate exploits of memory-corruption vulnerabilities.

Microsoft released security bulletin MS07-027 with fixes to address this issue. Please see the references for more information.