Microsoft Internet Explorer up to 11 CSS Token Sequence CAttrArray memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.0$5k-$25k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Microsoft Internet Explorer 7/8/9/10/11. The affected element is the function CAttrArray of the component CSS Token Sequence Handler. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2015-6184. The attack is possible to be carried out remotely. No exploit exists. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability classified as critical was found in Microsoft Internet Explorer 7/8/9/10/11 (Web Browser). Affected by this vulnerability is the function CAttrArray of the component CSS Token Sequence Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The CAttrArray object implementation in Microsoft Internet Explorer 7 through 11 allows remote attackers to execute arbitrary code or cause a denial of service (type confusion and memory corruption) via a malformed Cascading Style Sheets (CSS) token sequence in conjunction with modifications to HTML elements, aka "Internet Explorer Memory Corruption Vulnerability," a different vulnerability than CVE-2015-6048 and CVE-2015-6049.

The weakness was disclosed 03/09/2016 as MS15-106 as confirmed bulletin (Technet). It is possible to read the advisory at technet.microsoft.com. This vulnerability is known as CVE-2015-6184 since 08/14/2015. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 07/10/2022). It is expected to see the exploit prices for this product decreasing in the near future.

The vulnerability scanner Nessus provides a plugin with the ID 86367 (MS15-106: Cumulative Security Update for Internet Explorer (3096441)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins.

Applying the patch MS15-106 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com.

The vulnerability is also documented in the vulnerability database at Tenable (86367). The entries VDB-78362, VDB-78376, VDB-78377 and VDB-78378 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 86367
Nessus Name: MS15-106: Cumulative Security Update for Internet Explorer (3096441)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 802074
OpenVAS Name: Microsoft Internet Explorer Multiple Vulnerabilities (3096441)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: MS15-106

Timelineinfo

08/14/2015 🔍
03/09/2016 +208 days 🔍
03/09/2016 +0 days 🔍
03/10/2016 +1 days 🔍
07/10/2022 +2313 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS15-106
Status: Confirmed

CVE: CVE-2015-6184 (🔍)
GCVE (CVE): GCVE-0-2015-6184
GCVE (VulDB): GCVE-100-81307
SecurityFocus: 76982

See also: 🔍

Entryinfo

Created: 03/10/2016 09:15
Updated: 07/10/2022 08:10
Changes: 03/10/2016 09:15 (59), 06/12/2018 23:24 (16), 07/10/2022 08:10 (4)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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