Microsoft Windows 7 SP1 up to Server 2016 Graphics access control

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CVSS Meta Temp Score
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8.2$5k-$25k0.00

A vulnerability classified as critical was found in Microsoft Windows 7 SP1 up to Server 2016 (Operating System). This vulnerability affects an unknown part of the component Graphics. The manipulation with an unknown input leads to a privilege escalation vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The Microsoft Graphics Component on Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allows a remote code execution vulnerability in the way it handles specially crafted embedded fonts, aka "Microsoft Graphics Remote Code Execution Vulnerability". This CVE ID is unique from CVE-2017-11763.

The bug was discovered 10/10/2017. The weakness was published 10/10/2017 by Wayne Low as KB4042122 as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. This vulnerability was named CVE-2017-11763 since 07/31/2017. The attack can be initiated remotely. No form of authentication is required for a successful 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 MITRE ATT&CK project declares the attack technique as T1068. The advisory points out:

A remote code execution vulnerability exists when the Windows font library improperly handles specially crafted embedded fonts. An attacker who successfully exploited the vulnerability could take control of the 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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91411 (Microsoft Windows Security Update October 2017 (KRACK Attack) (ROCA)).

Applying the patch KB4042122 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 101109), SecurityTracker (ID 1039536) and Tenable (103745). Similar entries are available at 107699, 107701, 107702 and 107704.

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VulDB Meta Base Score: 8.6
VulDB Meta Temp Score: 8.2

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 8.1
Vendor Vector (Microsoft): 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

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Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-264
ATT&CK: T1068

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍

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

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Threat Intelligenceinfoedit

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Countermeasuresinfoedit

Recommended: Patch
Status: 🔍

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0-Day Time: 🔍
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Patch: KB4042122

Timelineinfoedit

07/31/2017 🔍
10/10/2017 +71 days 🔍
10/10/2017 +0 days 🔍
10/10/2017 +0 days 🔍
10/10/2017 +0 days 🔍
10/10/2017 +0 days 🔍
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: KB4042122
Researcher: Wayne Low
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-11763 (🔍)
OVAL: 🔍

SecurityFocus: 101109 - Microsoft Windows Graphics Component CVE-2017-11763 Remote Code Execution Vulnerability
SecurityTracker: 1039536

scip Labs: https://www.scip.ch/en/?labs.20161215
See also: 🔍

Entryinfoedit

Created: 10/11/2017 11:38 PM
Updated: 01/16/2021 02:40 PM
Changes: (1) advisory_person_name
Complete: 🔍

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