Microsoft Internet Explorer 9/10/11 JScript/VBScript Engine memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.0$5k-$25k0.00

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

The (1) JScript and (2) VBScript engines in Microsoft Internet Explorer 9 through 11 allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Scripting Engine Memory Corruption Vulnerability."

The weakness was disclosed 10/13/2015 with FireEye, Inc. as MS15-108 as confirmed bulletin (Technet). It is possible to read the advisory at technet.microsoft.com. This vulnerability is uniquely identified as CVE-2015-6056 since 08/14/2015. 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. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/21/2022). 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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 100259 (Microsoft Internet Explorer Cumulative Security Update (MS15-106)).

Applying the patch MS15-108 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 vulnerability database at Tenable (86367). Further details are available at trustwave.com. The entries 78362, 78363, 78364 and 78365 are pretty similar.

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  • end of life

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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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: 🔍
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CVSSv2info

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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

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Countermeasuresinfo

Recommended: Patch
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Patch: MS15-108

Timelineinfo

08/14/2015 🔍
10/13/2015 +60 days 🔍
10/13/2015 +0 days 🔍
10/13/2015 +0 days 🔍
10/13/2015 +0 days 🔍
10/13/2015 +0 days 🔍
10/13/2015 +0 days 🔍
10/14/2015 +1 days 🔍
10/14/2015 +0 days 🔍
06/21/2022 +2442 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS15-108
Organization: FireEye, Inc.
Status: Confirmed

CVE: CVE-2015-6056 (🔍)
SecurityTracker: 1033800 - Microsoft Internet Explorer Multiple Bugs Let Remote Users Bypass ASLR, Obtain Potentially Sensitive Information, Gain Elevated Privileges, and Execute Arbitrary Code
Vulnerability Center: 53392 - [MS15-106] Microsoft Internet Explorer 8 - 11 Remote Code Execution due to Scripting Engine Memory Corruption, Critical
SecurityFocus: 77006 - Microsoft Internet Explorer CVE-2015-6056 Scripting Engine Remote Memory Corruption Vulnerability

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Entryinfo

Created: 10/14/2015 10:37
Updated: 06/21/2022 07:30
Changes: 10/14/2015 10:37 (69), 04/07/2017 12:14 (10), 06/21/2022 07:30 (2)
Complete: 🔍

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