Microsoft Windows 7 SP1 up to Server 2016 JET Database Engine memory corruption

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CVSS Meta Temp Score
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CTI Interest Score
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6.5$5k-$25k0.00

A vulnerability was found in Microsoft Windows (Operating System). It has been rated as critical. Affected by this issue is an unknown code block of the component JET Database Engine. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. Impacted is confidentiality, integrity, and availability.

The bug was discovered 10/10/2017. The weakness was released 10/10/2017 by Zhou Yu working with Trend Micro's Zero Day Initiative as KB4041693 as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. This vulnerability is handled as CVE-2017-8717 since 05/03/2017. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 01/16/2021). The advisory points out:

A buffer overflow vulnerability exists in the Microsoft JET Database Engine that could allow remote code execution on an affected system. An attacker who successfully exploited this 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. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

The vulnerability scanner Nessus provides a plugin with the ID 103745 (KB4041676: Windows 10 Version 1703 October 2017 Cumulative Update (KRACK)), 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 local.

Applying the patch KB4041693 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 SecurityFocus (BID 101161), SecurityTracker (ID 1039527) and Tenable (103745). Entries connected to this vulnerability are available at 107699, 107700, 107701 and 107702.

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VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
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Vendor Base Score (Microsoft): 7.1
Vendor Vector (Microsoft): 🔍

NVD Base Score: 7.8
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Exploitinginfoedit

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

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Current Price Estimation: 🔍

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Nessus ID: 103745
Nessus Name: KB4041676: Windows 10 Version 1703 October 2017 Cumulative Update (KRACK)
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OpenVAS ID: 802136
OpenVAS Name: Microsoft Windows Multiple Vulnerabilities (KB4042895)
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Countermeasuresinfoedit

Recommended: Patch
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Patch: KB4041693

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05/03/2017 🔍
10/10/2017 +159 days 🔍
10/10/2017 +0 days 🔍
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10/10/2017 +0 days 🔍
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10/11/2017 +1 days 🔍
10/13/2017 +2 days 🔍
01/16/2021 +1191 days 🔍

Sourcesinfoedit

Vendor: https://www.microsoft.com/
Product: https://www.microsoft.com/en-us/windows

Advisory: KB4041693
Researcher: Zhou Yu working with Trend Micro's Zero Day Initiative
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-8717 (🔍)
OVAL: 🔍

SecurityFocus: 101161
SecurityTracker: 1039527

scip Labs: https://www.scip.ch/en/?labs.20161215
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Entryinfoedit

Created: 10/11/2017 11:38 PM
Updated: 01/16/2021 05:13 PM
Changes: (3) advisory_person_name source_securityfocus_date source_securityfocus_class
Complete: 🔍

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