// For flags

CVE-2011-1345

Microsoft Internet Explorer onPropertyChange Remote Code Execution Vulnerability

Severity Score

9.3
*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Microsoft Internet Explorer 6, 7, and 8 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly initialized or (2) is deleted, as demonstrated by Stephen Fewer as the first of three chained vulnerabilities during a Pwn2Own competition at CanSecWest 2011, aka "Object Management Memory Corruption Vulnerability."

Vulnerabilidad sin especificar en Microsoft Internet Explorer 8 en Windows 7 permite a atacantes remotos ejecutar código arbitrario a través de vectores de ataque desconocidos, como ha demostrado Stephen Fewer con la primera de las tres vulnerabilidades encadenadas durante el concurso Pwn2Own en la CanSecWest 2011.

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Internet Explorer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the way Internet Explorer handles onPropertyChange function calls. When the onPropertyChange event handler is set to an object's attribute collection, it fails to keep an accurate reference counter to the event object. The effect of this can be that the program frees the event object while there are still references to it. This can result in remote code execution under the content of the current user.

*Credits: Stephen Fewer of Harmony Security (www.harmonysecurity.com)
CVSS Scores
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2011-03-10 CVE Reserved
  • 2011-03-10 CVE Published
  • 2023-10-29 EPSS Updated
  • 2024-08-06 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Microsoft
Search vendor "Microsoft"
Internet Explorer
Search vendor "Microsoft" for product "Internet Explorer"
8
Search vendor "Microsoft" for product "Internet Explorer" and version "8"
-
Affected
in Microsoft
Search vendor "Microsoft"
Windows 7
Search vendor "Microsoft" for product "Windows 7"
*-
Safe