Microsoft Internet Explorer 9 CFormElement resource management

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Internet Explorer 9 and classified as critical. Affected by this issue is some unknown functionality of the component CFormElement Handler. Such manipulation leads to resource management. This vulnerability is referenced as CVE-2012-1538. It is possible to launch the attack remotely. Furthermore, an exploit is available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Microsoft Internet Explorer 9 (Web Browser). It has been rated as critical. Affected by this issue is an unknown code of the component CFormElement Handler. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Use-after-free vulnerability in Microsoft Internet Explorer 9 allows remote attackers to execute arbitrary code via a crafted web site, aka "CFormElement Use After Free Vulnerability."

The issue has been introduced in 03/16/2010. The weakness was published 11/13/2012 by Jose Antonio Vazquez Gonzalez with iDEFENSE Labs as MS12-071 as confirmed bulletin (Website). The advisory is shared for download at technet.microsoft.com. The public release has been coordinated with the vendor. This vulnerability is handled as CVE-2012-1538 since 03/08/2012. The attack may be launched remotely. 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.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 973 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 62903 (MS12-071: Cumulative Security Update for Internet Explorer (2761451)), 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 100124 (Microsoft Internet Explorer Cumulative Security Update (MS12-071)).

Applying the patch KB2761451 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. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 12643.

The vulnerability is also documented in the databases at X-Force (79684), Tenable (62903), SecurityFocus (BID 56420†), OSVDB (87257†) and Secunia (SA51202†). Similar entries are available at VDB-6919, VDB-6921 and VDB-6922. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
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: 62903
Nessus Name: MS12-071: Cumulative Security Update for Internet Explorer (2761451)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 902932
OpenVAS Name: Microsoft Internet Explorer Multiple Use-After-Free Vulnerabilities (2761451)
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: KB2761451
TippingPoint: 🔍
ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

03/16/2010 🔍
03/08/2012 +723 days 🔍
11/08/2012 +245 days 🔍
11/13/2012 +5 days 🔍
11/13/2012 +0 days 🔍
11/13/2012 +0 days 🔍
11/13/2012 +0 days 🔍
11/14/2012 +1 days 🔍
11/14/2012 +0 days 🔍
11/15/2012 +1 days 🔍
03/29/2025 +4517 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS12-071
Researcher: Jose Antonio Vazquez Gonzalez
Organization: iDEFENSE Labs
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2012-1538 (🔍)
GCVE (CVE): GCVE-0-2012-1538
GCVE (VulDB): GCVE-100-6920

OVAL: 🔍

X-Force: 79684
SecurityFocus: 56420
Secunia: 51202 - Microsoft Internet Explorer Multiple Use-After-Free Vulnerabilities, Highly Critical
OSVDB: 87257
SecurityTracker: 1027749
Vulnerability Center: 37222 - [MS12-071] Microsoft Internet Explorer 9 Remote Arbitrary Code Execution - CVE-2012-1538, Critical

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

Entryinfo

Created: 11/15/2012 09:52
Updated: 03/29/2025 23:57
Changes: 11/15/2012 09:52 (56), 04/07/2017 12:02 (30), 04/19/2021 09:43 (8), 04/19/2021 09:46 (1), 03/29/2025 23:57 (15)
Complete: 🔍
Committer:
Cache ID: 216::103

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