Microsoft Internet Explorer 8/9/10/11 CAttrArray input validation

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 8/9/10/11. It has been classified as critical. The affected element is the function CAttrArray. Performing a manipulation results in input validation. This vulnerability is identified as CVE-2014-4141. The attack can be initiated remotely. Additionally, an exploit exists. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in Microsoft Internet Explorer 8/9/10/11 (Web Browser). It has been classified as critical. This affects the function CAttrArray. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Microsoft Internet Explorer 8 through 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory Corruption Vulnerability."

The issue has been introduced in 03/05/2008. The weakness was released 10/14/2014 by Peter Van Eeckhoutte (corelanc0d3r) with VeriSign iDefense Labs as MS14-056 as confirmed bulletin (Technet). The advisory is shared at technet.microsoft.com. The public release was coordinated with Microsoft. This vulnerability is uniquely identified as CVE-2014-4141 since 06/12/2014. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details and a public exploit are known. Berend-Jan Wever summarizes the issue this way: "The CAttrArray object initially allocates a CImplAry buffer of 0x40 bytes, which can store 4 attributes. When the buffer is full, it is grown to 0x60 bytes. A new buffer is allocated at a different location in memory and the contents of the original buffer is copied there. The repro causes the code to do this, but the code continues to access the original buffer after it has been freed."

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2414 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 78431 (MS14-056: Cumulative Security Update for Internet Explorer (2987107)), 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 100212 (Microsoft Internet Explorer Cumulative Security Update (MS14-056)).

Applying the patch MS14-056 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 16508.

The vulnerability is also documented in the databases at Tenable (78431), SecurityFocus (BID 70342†), Secunia (SA60968†), SecurityTracker (ID 1031018†) and Vulnerability Center (SBV-46450†). Further details are available at krebsonsecurity.com. Entries connected to this vulnerability are available at VDB-67832, VDB-67831, VDB-67806 and VDB-67811. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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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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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

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Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 78431
Nessus Name: MS14-056: Cumulative Security Update for Internet Explorer (2987107)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Patch: MS14-056
Suricata ID: 2019420
Suricata Class: 🔍
Suricata Message: 🔍

TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

Fortigate IPS: 🔍

Timelineinfo

03/05/2008 🔍
06/12/2014 +2290 days 🔍
10/14/2014 +124 days 🔍
10/14/2014 +0 days 🔍
10/14/2014 +0 days 🔍
10/14/2014 +0 days 🔍
10/14/2014 +0 days 🔍
10/15/2014 +1 days 🔍
10/15/2014 +0 days 🔍
07/23/2025 +3934 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS14-056
Researcher: Peter Van Eeckhoutte (corelanc0d3r)
Organization: VeriSign iDefense Labs
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2014-4141 (🔍)
GCVE (CVE): GCVE-0-2014-4141
GCVE (VulDB): GCVE-100-67821

OVAL: 🔍
IAVM: 🔍

SecurityFocus: 70342 - Microsoft Internet Explorer CVE-2014-4141 Remote Memory Corruption Vulnerability
Secunia: 60968
SecurityTracker: 1031018 - Microsoft Internet Explorer Mulitple Flaws Let Remote Users Execute Arbitrary Code and Bypass the ASLR Security Feature
Vulnerability Center: 46450 - [MS14-056] Internet Explorer 10 Through 11 Remote Host Privilege due to Memory Corruption - CVE-2014-4141, Critical

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

Entryinfo

Created: 10/15/2014 11:22
Updated: 07/23/2025 23:58
Changes: 10/15/2014 11:22 (84), 04/07/2017 12:11 (11), 02/22/2022 03:11 (3), 02/22/2022 03:18 (1), 07/23/2025 23:58 (22)
Complete: 🔍
Cache ID: 216:08C:103

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