Microsoft Windows up to Server 2016 Kernel Memory 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 categorized as problematic has been discovered in Microsoft Windows up to Server 2016. This affects an unknown function of the component Kernel. Executing a manipulation can lead to information disclosure (Memory). This vulnerability is tracked as CVE-2017-0258. The attack is restricted to local execution. Moreover, an exploit is present. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows up to Server 2016 (Operating System). It has been declared as problematic. This vulnerability affects an unknown functionality of the component Kernel. The manipulation with an unknown input leads to a information disclosure vulnerability (Memory). 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 bug was discovered 05/09/2017. The weakness was disclosed 05/09/2017 by Mateusz Jurczyk with Google Project Zero as KB4019215 as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. This vulnerability was named CVE-2017-0258 since 09/09/2016. The exploitation appears to be difficult. The attack needs to be approached locally. The successful exploitation needs a single authentication. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1592. The advisory points out:

An information disclosure vulnerability exists when the Windows kernel improperly initializes objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the user’s system. An authenticated attacker could exploit this vulnerability by running a specially crafted application. The update addresses the vulnerability by correcting how the Windows kernel initializes objects in memory.

A public exploit has been developed by Google Security Research and been published 6 days after the advisory. It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 100055 (KB4016871: Windows 10 Version 1703 May 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 91369 (Microsoft Windows Security Update May 2017).

Applying the patch KB4019215 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 Exploit-DB (42006), Tenable (100055) and SecurityFocus (BID 98112†). The entries VDB-100990, VDB-100991, VDB-100993 and VDB-100994 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.7
VulDB Meta Temp Score: 4.5

VulDB Base Score: 4.7
VulDB Temp Score: 4.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 4.7
Vendor Vector (Microsoft): 🔍

NVD Base Score: 4.7
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Name: Memory
Class: Information disclosure / Memory
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Google Security Research
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 100055
Nessus Name: KB4016871: Windows 10 Version 1703 May 2017 Cumulative Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 803007
OpenVAS Name: Microsoft COM Multiple Vulnerabilities (KB4018556)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: KB4019215

Timelineinfo

09/09/2016 🔍
05/09/2017 +242 days 🔍
05/09/2017 +0 days 🔍
05/09/2017 +0 days 🔍
05/09/2017 +0 days 🔍
05/09/2017 +0 days 🔍
05/10/2017 +1 days 🔍
05/12/2017 +2 days 🔍
05/15/2017 +3 days 🔍
05/15/2017 +0 days 🔍
12/23/2020 +1318 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: KB4019215
Researcher: Mateusz Jurczyk
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-0258 (🔍)
GCVE (CVE): GCVE-0-2017-0258
GCVE (VulDB): GCVE-100-101032

OVAL: 🔍

SecurityFocus: 98112 - Microsoft Windows Kernel CVE-2017-0258 Local Information Disclosure Vulnerability
SecurityTracker: 1038446

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

Entryinfo

Created: 05/10/2017 14:57
Updated: 12/23/2020 07:40
Changes: 05/10/2017 14:57 (98), 10/17/2019 09:49 (7), 12/23/2020 07:40 (3)
Complete: 🔍
Cache ID: 216::103

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