Microsoft Internet Explorer 6/7/8 input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Microsoft Internet Explorer 6/7/8. This issue affects some unknown processing. The manipulation leads to input validation. This vulnerability is uniquely identified as CVE-2011-1996. The attack is possible to be carried out remotely. Moreover, an exploit is present. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Microsoft Internet Explorer 6/7/8 (Web Browser). This issue affects an unknown functionality. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Microsoft Internet Explorer 6 through 8 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing a deleted object, aka "Option Element Remote Code Execution Vulnerability."

The issue has been introduced in 03/05/2008. The weakness was disclosed 10/11/2011 as MS11-081 as confirmed bulletin (Technet). The advisory is shared at technet.microsoft.com. The identification of this vulnerability is CVE-2011-1996. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are unknown but a public exploit is available.

The exploit is available at exploit-db.com. It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 1315 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 56455 , which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 100111 (Microsoft Internet Explorer Cumulative Security Update (MS11-081)).

Applying the patch MS11-081 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 11759.

The vulnerability is also documented in the databases at X-Force (70130), Exploit-DB (24020), Tenable (56455), SecurityFocus (BID 49961†) and Vulnerability Center (SBV-33524†). The entries VDB-4423, VDB-59002, VDB-59001 and VDB-59000 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
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: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 56455
Nessus File: 🔍
Nessus Risk: 🔍

OpenVAS ID: 901208
OpenVAS Name: Microsoft Internet Explorer Multiple Vulnerabilities (2586448)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: ms11_081_option.rb
MetaSploit Name: MS11-081 Microsoft Internet Explorer Option Element Use-After-Free
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: MS11-081
TippingPoint: 🔍
ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

03/05/2008 🔍
05/09/2011 +1159 days 🔍
10/11/2011 +155 days 🔍
10/11/2011 +0 days 🔍
10/11/2011 +0 days 🔍
10/12/2011 +1 days 🔍
03/23/2015 +1258 days 🔍
06/06/2025 +3728 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS11-081
Status: Confirmed

CVE: CVE-2011-1996 (🔍)
GCVE (CVE): GCVE-0-2011-1996
GCVE (VulDB): GCVE-100-58997

OVAL: 🔍

X-Force: 70130
SecurityFocus: 49961
Vulnerability Center: 33524 - [MS11-081] Microsoft Internet Explorer 6-8 Option Element Remote Code Execution Vulnerability, Medium

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

Entryinfo

Created: 03/23/2015 16:50
Updated: 06/06/2025 21:24
Changes: 03/23/2015 16:50 (46), 04/07/2017 12:10 (26), 11/23/2021 15:01 (2), 11/23/2021 15:05 (7), 11/23/2021 15:11 (1), 06/06/2025 21:24 (18)
Complete: 🔍
Cache ID: 216:62E:103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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