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

Summaryinfo

A vulnerability was found in Microsoft Internet Explorer 9/10/11. It has been declared as critical. This vulnerability affects unknown code of the component JScript/VBScript Engine. The manipulation leads to memory corruption. This vulnerability was named CVE-2015-6056. The attack can be initiated remotely. There is no exploit available. It is recommended to apply a patch to fix this issue. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Detailsinfo

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 $5k-$25k 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 databases at Tenable (86367), SecurityFocus (BID 77006†), SecurityTracker (ID 1033800†) and Vulnerability Center (SBV-53392†). Further details are available at trustwave.com. The entries VDB-78362, VDB-78363, VDB-78364 and VDB-78365 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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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: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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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: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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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 (🔍)
GCVE (CVE): GCVE-0-2015-6056
GCVE (VulDB): GCVE-100-78387
SecurityFocus: 77006 - Microsoft Internet Explorer CVE-2015-6056 Scripting Engine Remote Memory Corruption Vulnerability
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

Misc.: 🔍
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Entryinfo

Created: 10/14/2015 10:37 AM
Updated: 06/21/2022 07:30 AM
Changes: 10/14/2015 10:37 AM (69), 04/07/2017 12:14 PM (10), 06/21/2022 07:30 AM (2)
Complete: 🔍
Cache ID: 18:CC0:40

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