Microsoft Internet Explorer 6/7/8/9 NULL Object code injection

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Microsoft Internet Explorer 6/7/8/9. The impacted element is an unknown function of the component NULL Object Handler. Such manipulation leads to code injection. This vulnerability is documented as CVE-2012-2521. The attack requires being on the local network. Additionally, an exploit exists. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Microsoft Internet Explorer 6/7/8/9 (Web Browser) and classified as critical. Affected by this issue is an unknown function of the component NULL Object Handler. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Microsoft Internet Explorer 6 through 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing a deleted object, aka "Asynchronous NULL Object Access Remote Code Execution Vulnerability."

The weakness was released 08/14/2012 by Derek Soeder with eEye as MS12-052 as confirmed article (Microsoft Technet). The advisory is shared for download at technet.microsoft.com. The public release was coordinated with the vendor. This vulnerability is handled as CVE-2012-2521 since 05/09/2012. The attack needs to approached within the local network. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are unknown but a private exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 61527 (MS12-052: Cumulative Security Update for Internet Explorer (2722913)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins. The commercial vulnerability scanner Qualys is able to test this issue with plugin 100125 (Microsoft Internet Explorer Cumulative Security Update (MS12-052)).

Applying the patch MS12-052 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (61527), SecurityFocus (BID 54952†), OSVDB (84596†), Secunia (SA50237†) and SecurityTracker (ID 1027390†). Entries connected to this vulnerability are available at VDB-5934, VDB-5935, VDB-5937 and VDB-5944. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.5
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Code injection
CWE: CWE-94 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Private
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 61527
Nessus Name: MS12-052: Cumulative Security Update for Internet Explorer (2722913)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 902923
OpenVAS Name: Microsoft Internet Explorer Multiple Vulnerabilities (2722913)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: MS12-052
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

05/09/2012 🔍
08/14/2012 +97 days 🔍
08/14/2012 +0 days 🔍
08/14/2012 +0 days 🔍
08/14/2012 +0 days 🔍
08/14/2012 +0 days 🔍
08/15/2012 +1 days 🔍
08/16/2012 +1 days 🔍
03/27/2021 +3145 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS12-052
Researcher: Derek Soeder
Organization: eEye
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2012-2521 (🔍)
GCVE (CVE): GCVE-0-2012-2521
GCVE (VulDB): GCVE-100-5936

OVAL: 🔍

SecurityFocus: 54952
Secunia: 50237 - Microsoft Internet Explorer Multiple Vulnerabilities, Highly Critical
OSVDB: 84596 - Microsoft IE NULL Object Handling Use-after-free Arbitrary Code Execution
SecurityTracker: 1027390 - Microsoft Internet Explorer Bugs Let Remote Users Execute Arbitrary Code
Vulnerability Center: 35858 - [MS12-052] Microsoft Internet Explorer 6-9 Remote Arbitrary Code Execution Vulnerability, Critical

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 08/16/2012 11:20
Updated: 03/27/2021 11:04
Changes: 08/16/2012 11:20 (58), 04/07/2017 12:02 (28), 03/27/2021 11:00 (8), 03/27/2021 11:04 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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