// For flags

CVE-2014-1770

Microsoft Internet Explorer CMarkup Use-After-Free Remote Code Execution Vulnerability

Severity Score

9.3
*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Use-after-free vulnerability in Microsoft Internet Explorer 6 through 11 allows remote attackers to execute arbitrary code via crafted JavaScript code that interacts improperly with a CollectGarbage function call on a CMarkup object allocated by the CMarkup::CreateInitialMarkup function.

Vulnerabilidad de uso después de liberación en Microsoft Internet Explorer 8 permite a atacantes remotos ejecutar código arbitrario a través de código JavaScript manipulado que no interactúa debidamente con una llamada de la función CollectGarbage function en un objeto CMarkup asignado por la función CMarkup::CreateInitialMarkup.

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft 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 handling of CMarkup objects. The allocation initially happens within CMarkup::CreateInitialMarkup. The free happens after the execution of certain JavaScript code followed by a CollectGarbage call. By manipulating a document's elements an attacker can force a dangling pointer to be reused after it has been freed. An attacker can leverage this vulnerability to execute code under the context of the current process.

*Credits: Peter 'corelanc0d3r' Van Eeckhoutte - Corelan - www.corelan.be
CVSS Scores
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2014-01-29 CVE Reserved
  • 2014-05-21 CVE Published
  • 2014-07-08 First Exploit
  • 2024-08-06 CVE Updated
  • 2024-08-25 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-399: Resource Management Errors
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
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6
Search vendor "Microsoft" for product "Internet Explorer" and version "6"
-
Affected
Microsoft
Search vendor "Microsoft"
Internet Explorer
Search vendor "Microsoft" for product "Internet Explorer"
7
Search vendor "Microsoft" for product "Internet Explorer" and version "7"
-
Affected
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
Microsoft
Search vendor "Microsoft"
Internet Explorer
Search vendor "Microsoft" for product "Internet Explorer"
9
Search vendor "Microsoft" for product "Internet Explorer" and version "9"
-
Affected
Microsoft
Search vendor "Microsoft"
Internet Explorer
Search vendor "Microsoft" for product "Internet Explorer"
10
Search vendor "Microsoft" for product "Internet Explorer" and version "10"
-
Affected
Microsoft
Search vendor "Microsoft"
Internet Explorer
Search vendor "Microsoft" for product "Internet Explorer"
11
Search vendor "Microsoft" for product "Internet Explorer" and version "11"
-
Affected