Microsoft .NET Framework up to 4.7 Library Loader access control

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Microsoft .NET Framework up to 4.7. This affects an unknown function of the component Library Loader. Such manipulation leads to access control. This vulnerability is listed as CVE-2017-0160. The attack must be carried out locally. In addition, an exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Microsoft .NET Framework up to 4.7 (Programming Language Software). Affected by this issue is some unknown functionality of the component Library Loader. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Microsoft .NET Framework 2.0, 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7 allows an attacker with access to the local system to execute malicious code, aka ".NET Remote Code Execution Vulnerability."

The bug was discovered 04/11/2017. The weakness was presented 04/11/2017 by James Forshaw with Google Project Zero as KB4014981 / KB4014982 / KB4014983 / KB4014984 / KB4015217 / KB4015219 / KB4015221 / KB4015583 / KB4014981 as confirmed knowledge base article (Website). The advisory is shared for download at portal.msrc.microsoft.com. This vulnerability is handled as CVE-2017-0160 since 09/09/2016. The attack needs to be approached locally. A simple authentication is required for exploitation. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

After 2 weeks, there has been an exploit disclosed. The exploit is available at github.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 99365 (Security and Quality Rollup for .NET Framework (April 2017)), 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 91353 (Microsoft .NET Framework Security Update April 2017).

Applying a patch 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 (41903), Tenable (99365), SecurityFocus (BID 97447†) and SecurityTracker (ID 1038236†). catalog.update.microsoft.com is providing further details. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 99365
Nessus Name: Security and Quality Rollup for .NET Framework (April 2017)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 103306
OpenVAS Name: Microsoft .NET Framework Remote Code Execution Vulnerability (KB4014984)
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: catalog.update.microsoft.com

Timelineinfo

09/09/2016 🔍
04/11/2017 +214 days 🔍
04/11/2017 +0 days 🔍
04/11/2017 +0 days 🔍
04/11/2017 +0 days 🔍
04/12/2017 +1 days 🔍
04/12/2017 +0 days 🔍
04/12/2017 +0 days 🔍
04/14/2017 +2 days 🔍
04/20/2017 +6 days 🔍
04/20/2017 +0 days 🔍
09/23/2020 +1252 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: KB4014981 / KB4014982 / KB4014983 / KB4014984 / KB4015217 / KB4015219 / KB4015221 / KB4015583 / KB4014981
Researcher: James Forshaw
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-0160 (🔍)
GCVE (CVE): GCVE-0-2017-0160
GCVE (VulDB): GCVE-100-99668

OVAL: 🔍

SecurityFocus: 97447 - Microsoft Windows .NET Framework CVE-2017-0160 Remote Code Execution Vulnerability
OSVDB: - CVE-2017-0160 - Microsoft - .NET Framework - Code Execution Issue
SecurityTracker: 1038236

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍

Entryinfo

Created: 04/12/2017 16:33
Updated: 09/23/2020 18:47
Changes: 04/12/2017 16:33 (89), 09/23/2020 18:47 (7)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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