Microsoft Edge on Win10 Scripting Engine information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Microsoft Edge on Win10. Affected by this issue is some unknown functionality of the component Scripting Engine. This manipulation causes information disclosure. This vulnerability is registered as CVE-2017-8739. Remote exploitation of the attack is possible. No exploit is available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability classified as problematic was found in Microsoft Edge on Win10 (Web Browser) (version now known). Affected by this vulnerability is some unknown processing of the component Scripting Engine. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

Microsoft Edge in Microsoft Windows 10 1703 allows an attacker to obtain information to further compromise the user's system, due to the way that the Microsoft Edge scripting engine handles objects in memory, aka "Scripting Engine Information Disclosure Vulnerability".

The bug was discovered 09/12/2017. The weakness was published 09/12/2017 with Microsoft as KB4038788 as confirmed security update guide (Website). The advisory is shared at portal.msrc.microsoft.com. This vulnerability is known as CVE-2017-8739 since 05/03/2017. 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. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue. The advisory points out:

An information disclosure vulnerability exists when the scripting engine does not properly handle objects in memory in Microsoft Edge. An attacker who successfully exploited the vulnerability could obtain information to further compromise the user’s system.

The vulnerability scanner Nessus provides a plugin with the ID 103130 (KB4038788: Windows 10 Version 1703 September 2017 Cumulative Update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91409 (Microsoft Edge Security Update for September 2017).

Applying the patch KB4038788 is able to eliminate this problem. The bugfix is ready for download at catalog.update.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 (103130) and SecurityFocus (BID 100761†). Similar entries are available at VDB-106501, VDB-106456, VDB-106471 and VDB-106478. 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: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 4.3
Vendor Vector (Microsoft): 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
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: 103130
Nessus Name: KB4038788: Windows 10 Version 1703 September 2017 Cumulative Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802136
OpenVAS Name: Microsoft Windows Multiple Vulnerabilites (KB4038788)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: KB4038788

Timelineinfo

05/03/2017 🔍
09/12/2017 +132 days 🔍
09/12/2017 +0 days 🔍
09/12/2017 +0 days 🔍
09/12/2017 +0 days 🔍
09/12/2017 +0 days 🔍
09/12/2017 +0 days 🔍
09/13/2017 +1 days 🔍
08/22/2024 +2535 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: KB4038788
Researcher: Microsoft ChakraCore Team
Organization: Microsoft
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-8739 (🔍)
GCVE (CVE): GCVE-0-2017-8739
GCVE (VulDB): GCVE-100-106525

OVAL: 🔍

SecurityFocus: 100761 - Microsoft Edge Scripting Engine CVE-2017-8739 Information Disclosure Vulnerability
SecurityTracker: 1039342

See also: 🔍

Entryinfo

Created: 09/13/2017 14:32
Updated: 08/22/2024 06:29
Changes: 09/13/2017 14:32 (81), 11/15/2019 15:38 (12), 01/12/2021 11:24 (2), 01/12/2021 11:28 (1), 08/22/2024 06:29 (17)
Complete: 🔍
Cache ID: 216::103

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