Microsoft Internet Explorer 8/9 JavaScript Parser numeric error

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

Summaryinfo

A vulnerability, which was classified as critical, has been found in Microsoft Internet Explorer 8/9. This affects an unknown function of the component JavaScript Parser. Performing a manipulation results in numeric error. This vulnerability is reported as CVE-2012-2523. The attacker must have access to the local network to execute the attack. Moreover, an exploit is present. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in Microsoft Internet Explorer 8/9 (Web Browser). It has been classified as critical. This affects an unknown functionality of the component JavaScript Parser. The manipulation with an unknown input leads to a numeric error vulnerability. CWE is classifying the issue as CWE-189. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Integer overflow in Microsoft Internet Explorer 8 and 9, JScript 5.8, and VBScript 5.8 on 64-bit platforms allows remote attackers to execute arbitrary code by leveraging an incorrect size calculation during object copying, aka "JavaScript Integer Overflow Remote Code Execution Vulnerability."

The issue has been introduced in 03/05/2008. The weakness was disclosed 08/14/2012 as MS12-052 as confirmed bulletin (Microsoft Technet). The advisory is shared at technet.microsoft.com. This vulnerability is uniquely identified as CVE-2012-2523 since 05/09/2012. The attack can only be done within the local network. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. 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 1623 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 61531 (MS12-056: Vulnerability in JScript and VBScript Scripting Engines Could Allow Remote Code Execution (2706045)), 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 (61531), OSVDB (84597†) and Secunia (SA50237†). The entries VDB-5934, VDB-5935, VDB-5936 and VDB-5944 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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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: 🔍

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Exploitinginfo

Class: Numeric error
CWE: CWE-189
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: 61531
Nessus Name: MS12-056: Vulnerability in JScript and VBScript Scripting Engines Could Allow Remote Code Execution (2706045)
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: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: MS12-052

Timelineinfo

03/05/2008 🔍
05/09/2012 +1526 days 🔍
08/14/2012 +97 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
Status: Confirmed

CVE: CVE-2012-2523 (🔍)
GCVE (CVE): GCVE-0-2012-2523
GCVE (VulDB): GCVE-100-5937

OVAL: 🔍
IAVM: 🔍

Secunia: 50237 - Microsoft Internet Explorer Multiple Vulnerabilities, Highly Critical
OSVDB: 84597

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

Entryinfo

Created: 08/16/2012 11:47
Updated: 03/27/2021 11:13
Changes: 08/16/2012 11:47 (52), 04/07/2017 12:02 (22), 03/27/2021 11:11 (7), 03/27/2021 11:13 (1)
Complete: 🔍
Cache ID: 216:571:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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