Microsoft Edge Scripting Engine Object memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.5$5k-$25k0.00

Summaryinfo

A vulnerability was found in Microsoft Edge. It has been classified as critical. Affected is an unknown function of the component Scripting Engine. This manipulation as part of Object causes memory corruption. This vulnerability is registered as CVE-2017-8617. Remote exploitation of the attack is possible. No exploit is available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as critical was found in Microsoft Edge (Web Browser) (unknown version). Affected by this vulnerability is an unknown code block of the component Scripting Engine. The manipulation as part of a Object 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:

Microsoft Edge in Windows 10 1703 Microsoft Edge allows a remote code execution vulnerability in the way affected Microsoft scripting engines render when handling objects in memory, aka "Microsoft Edge Remote Code Execution Vulnerability."

The bug was discovered 07/11/2017. The weakness was published 07/11/2017 with Microsoft as KB4025342 as confirmed security update guide (Website). The advisory is shared at portal.msrc.microsoft.com. This vulnerability is known as CVE-2017-8617 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. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 10/25/2019). The advisory points out:

A remote code execution vulnerability exists in the way Microsoft Edge handles objects in memory. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

The vulnerability scanner Nessus provides a plugin with the ID 101368 (KB4025342: Windows 10 Version 1703 July 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 91394 (Microsoft Edge Security Update for July 2017).

Applying the patch KB4025342 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 (101368) and SecurityFocus (BID 99422†). Similar entries are available at VDB-103417, VDB-103423, VDB-103450 and VDB-103451. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.4
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 4.2
Vendor Vector (Microsoft): 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

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: 101368
Nessus Name: KB4025342: Windows 10 Version 1703 July 2017 Cumulative Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802136
OpenVAS Name: Microsoft Windows Multiple Vulnerabilites (KB4025342)
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: KB4025342

Timelineinfo

05/03/2017 🔍
07/11/2017 +69 days 🔍
07/11/2017 +0 days 🔍
07/11/2017 +0 days 🔍
07/11/2017 +0 days 🔍
07/11/2017 +0 days 🔍
07/11/2017 +0 days 🔍
07/12/2017 +1 days 🔍
10/25/2019 +835 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: KB4025342
Organization: Microsoft
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-8617 (🔍)
GCVE (CVE): GCVE-0-2017-8617
GCVE (VulDB): GCVE-100-103465

OVAL: 🔍

SecurityFocus: 99422 - Microsoft Edge CVE-2017-8617 Remote Code Execution Vulnerability

See also: 🔍

Entryinfo

Created: 07/12/2017 10:50
Updated: 10/25/2019 09:21
Changes: 07/12/2017 10:50 (90), 10/25/2019 09:21 (5)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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