Vulnerabilities > CVE-2017-0160 - Unspecified vulnerability in Microsoft .Net Framework
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
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."
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 8 |
Exploit-Db
| file | exploits/windows/remote/41903.txt |
| id | EDB-ID:41903 |
| last seen | 2018-11-30 |
| modified | 2017-04-20 |
| platform | windows |
| port | |
| published | 2017-04-20 |
| reporter | Exploit-DB |
| source | https://www.exploit-db.com/download/41903 |
| title | Microsoft Windows - ManagementObject Arbitrary .NET Serialization Remote Code Execution |
| type | remote |
Nessus
NASL family Windows : Microsoft Bulletins NASL id SMB_NT_MS17_APR_4015221.NASL description The remote Windows 10 Version 1507 host is missing security update KB4015221. It is, therefore, affected by multiple vulnerabilities : - An information disclosure vulnerability exists in the open-source libjpeg image processing library due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit this to disclose sensitive information that can be utilized to bypass ASLR security protections. (CVE-2013-6629) - An information disclosure vulnerability exists in the win32k component due to improper handling of kernel information. A local attacker can exploit these vulnerabilities, via a specially crafted application, to disclose sensitive information. (CVE-2017-0058) - A privilege escalation vulnerability exists in the Microsoft Graphics Component due to improper handling of objects in memory. A local attacker can exploit this, via a specially crafted application, to execute arbitrary code with elevated privileges. (CVE-2017-0156) - A flaw exists in the VBScript engine due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit this, by convincing a user to visit a malicious website or open a specially crafted document file, to execute arbitrary code. (CVE-2017-0158) - A privilege escalation vulnerability exists in the Microsoft .NET framework due to improper validation of input when loading libraries. A local attacker can exploit this to gain elevated privileges. (CVE-2017-0160) - Multiple flaws exist in Windows Hyper-V Network Switch due to improper validation of input from the guest operating system. A local attacker can exploit these, via a specially crafted application on the guest, to execute arbitrary code on the host system. (CVE-2017-0162, CVE-2017-0163) - A privilege escalation vulnerability exists due to improper sanitization of handles stored in memory. A local attacker can exploit this to gain elevated privileges. (CVE-2017-0165) - A flaw exists in LDAP due to buffer request lengths not being properly calculated. An unauthenticated, remote attacker can exploit this, via specially crafted traffic sent to a Domain Controller, to run processes with elevated privileges. (CVE-2017-0166) - A flaw exists in the Windows kernel due to improper handling of objects in memory. A local attacker can exploit this, via a specially crafted application, to disclose sensitive information. (CVE-2017-0167) last seen 2020-06-01 modified 2020-06-02 plugin id 99287 published 2017-04-11 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/99287 title KB4015221: Windows 10 Version 1507 April 2017 Cumulative Update NASL family Windows : Microsoft Bulletins NASL id SMB_NT_MS17_APR_4015583.NASL description The remote Windows 10 version 1703 host is missing security update KB4015583. It is, therefore, affected by multiple vulnerabilities : - An information disclosure vulnerability exists in the open-source libjpeg image processing library due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit this to disclose sensitive information that can be utilized to bypass ASLR security protections. (CVE-2013-6629) - Multiple information disclosure vulnerabilities exist in the win32k component due to improper handling of kernel information. A local attacker can exploit these vulnerabilities, via a specially crafted application, to disclose sensitive information. (CVE-2017-0058, CVE-2017-0188) - A remote code execution vulnerability exists in Microsoft Edge due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this, by convincing a user to visit a malicious website, to execute arbitrary code. (CVE-2017-0093) - A privilege escalation vulnerability exists in the Microsoft Graphics Component due to improper handling of objects in memory. A local attacker can exploit this, via a specially crafted application, to execute arbitrary code with elevated privileges. (CVE-2017-0156) - A flaw exists in the VBScript engine due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit this, by convincing a user to visit a malicious website or open a specially crafted document file, to execute arbitrary code. (CVE-2017-0158) - A security feature bypass vulnerability exists in ADFS due to incorrectly treating requests from Extranet clients as Intranet requests. An unauthenticated, remote attacker can exploit this to bypass account lockout protection mechanisms and more easily gain access to a user last seen 2020-06-01 modified 2020-06-02 plugin id 99288 published 2017-04-11 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/99288 title KB4015583: Windows 10 Version 1703 April 2017 Cumulative Update NASL family Windows : Microsoft Bulletins NASL id SMB_NT_MS17_APR_4015219.NASL description The remote Windows 10 version 1511 host is missing security update KB4015219. It is, therefore, affected by multiple vulnerabilities : - An information disclosure vulnerability exists in the open-source libjpeg image processing library due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit this to disclose sensitive information that can be utilized to bypass ASLR security protections. (CVE-2013-6629) - Multiple information disclosure vulnerabilities exist in the win32k component due to improper handling of kernel information. A local attacker can exploit these vulnerabilities, via a specially crafted application, to disclose sensitive information. (CVE-2017-0058, CVE-2017-0188) - A remote code execution vulnerability exists in Microsoft Edge due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this, by convincing a user to visit a malicious website, to execute arbitrary code. (CVE-2017-0093) - A privilege escalation vulnerability exists in the Microsoft Graphics Component due to improper handling of objects in memory. A local attacker can exploit this, via a specially crafted application, to execute arbitrary code with elevated privileges. (CVE-2017-0156) - A flaw exists in the VBScript engine due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit this, by convincing a user to visit a malicious website or open a specially crafted document file, to execute arbitrary code. (CVE-2017-0158) - A privilege escalation vulnerability exists in the Microsoft .NET framework due to improper validation of input when loading libraries. A local attacker can exploit this to gain elevated privileges. (CVE-2017-0160) - Multiple flaws exist in Windows Hyper-V Network Switch due to improper validation of input from the guest operating system. A local attacker can exploit these, via a specially crafted application on the guest, to execute arbitrary code on the host system. (CVE-2017-0162, CVE-2017-0163, CVE-2017-0180, CVE-2017-0181) - A privilege escalation vulnerability exists due to improper sanitization of handles stored in memory. A local attacker can exploit this to gain elevated privileges. (CVE-2017-0165) - A flaw exists in LDAP due to buffer request lengths not being properly calculated. An unauthenticated, remote attacker can exploit this, via specially crafted traffic sent to a Domain Controller, to run processes with elevated privileges. (CVE-2017-0166) - A flaw exists in the Windows kernel due to improper handling of objects in memory. A local attacker can exploit this, via a specially crafted application, to disclose sensitive information. (CVE-2017-0167) - Multiple denial of service vulnerabilities exist in Hyper-V due to improper validation of input from a privileged user on a guest operating system. A local attacker on the guest can exploit these, via a specially crafted application, to cause the host system to crash. (CVE-2017-0178, CVE-2017-0179, CVE-2017-0184) - Multiple denial of service vulnerabilities exist in Windows Hyper-V Network Switch due to improper validation of input from the guest operating system. A local attacker on the guest can exploit these vulnerabilities, via a specially crafted application, to crash the host system. (CVE-2017-0182, CVE-2017-0183, CVE-2017-0185, CVE-2017-0186) - A privilege escalation vulnerability exists in the Windows kernel-mode driver due to improper handling of objects in memory. A local attacker can exploit this, via a specially crafted application, to execute arbitrary code in kernel mode. (CVE-2017-0189) - A flaw exists in Windows due to improper handling of objects in memory that allows an attacker to cause a denial of service condition. (CVE-2017-0191) - An information disclosure vulnerability exists in the Adobe Type Manager Font Driver (ATMFD.dll) due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit this, by convincing a user to open a specially crafted document or visit a malicious web page, to disclose sensitive information. (CVE-2017-0192) - A memory corruption issue exists in Internet Explorer due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this, by convincing a user to visit a malicious website, to execute arbitrary code. (CVE-2017-0202) - A security feature bypass vulnerability exists in Microsoft Edge due to improper handling of CSP documents. An unauthenticated, remote attacker can exploit this, via a specially crafted CSP document, to bypass security features. (CVE-2017-0203) - A memory corruption issue exists in Microsoft Edge due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this, by convincing a user to visit a malicious website, to execute arbitrary code. (CVE-2017-0205) - An information disclosure vulnerability exists in Microsoft Edge in the Chakra scripting engine due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit this to disclose sensitive information. (CVE-2017-0208) - A privilege escalation vulnerability exists in Internet Explorer due to a failure to properly enforce cross-domain policies. An unauthenticated, remote attacker can exploit this to inject arbitrary content and gain elevated privileges. (CVE-2017-0210) - A privilege escalation vulnerability exists in Microsoft Windows OLE due to an unspecified failure in integrity-level checks. An authenticated, remote attacker can exploit this to run an application with limited privileges at a medium integrity level. Note that this vulnerability by itself does not allow arbitrary code execution but can be used in conjunction other vulnerabilities. (CVE-2017-0211) last seen 2020-06-01 modified 2020-06-02 plugin id 99282 published 2017-04-11 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/99282 title KB4015219: Windows 10 Version 1511 April 2017 Cumulative Update NASL family Windows : Microsoft Bulletins NASL id SMB_NT_MS17_APR_4014981.NASL description The version of Microsoft .NET Framework installed on the remote Windows host is missing a security update. It is, therefore, affected by an arbitrary code execution vulnerability due to a failure to properly validate input before loading libraries. A local attacker can exploit this to execute arbitrary code with elevated privileges. last seen 2020-06-01 modified 2020-06-02 plugin id 99365 published 2017-04-14 reporter This script is Copyright (C) 2017-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/99365 title Security and Quality Rollup for .NET Framework (April 2017)
Seebug
| bulletinFamily | exploit |
| description | Windows: ManagementObject Arbitrary .NET Serialization RCE Platform: .NET 4.6, Powershell 4. Tested between Server 2016 and Windows 10 Anniversary Edition Class: Remote Code Execution #### Summary: Accessing a compromised WMI server over DCOM using System.Management classes or the Powershell Get-WmiObject Cmdlet can lead to the server running arbitrary code on the calling machine leading to RCE. #### Description: The dangers of using .NET for DCOM are well know, the SRD blog made a post (https://blogs.technet.microsoft.com/srd/2014/10/14/more-details-about-cve-2014-4073-elevation-of-privilege-vulnerability/) which explicitly said it shouldn’t be used between trust boundaries. Presumably people took this to mean implementing servers, but it’s also a risk if a .NET DCOM client connects to an untrusted endpoint. This is due to the IManagedObject interface which will automatically force a client to deserialize an untrusted BinaryFormatter stream which is known bad. One common use of DCOM in the .NET framework is for WMI access. The old classes in the System.Management namespace are still accessible (even though technically supersceded by Cim classes) and in powershell they act as the backend for Get-WmiObject and family. Through inspection it’s clear that a number of places the client querys for IManagedObject (for example on the IWbemServices object returned from IWbemLevel1Login::NTLMLogin method) and would be vulnerable. If this interface is being queried it means that a .NET client is trying to create an RCW and will try and create a local copy of a remote serializable object. Therefore in corporate scenarios where some central system is using WMI over DCOM for management and analysis of running systems (and the management code is using the old .NET/PS classes to do the calls) a compromised machine which replaces the WMI service with its own malicious one could get arbitrary code execution on the monitoring machine. As this is typically going to be a higher privileged account (due to the requirements of DCOM access) it probably makes it more serious. Looking at the network traffic the initial CreateInstance call on the remote activator is only using CONNECT level authentication. This means that it might also be possible to MITM (or Man-At-The-Side) a .NET WMI client and send it back a malicious COM objref to get it to communicate with the attacker's server. Of course ideally no one would do this, or use the old style .NET and PS commands. But I’m sure there are networks out there which do so. Proof of Concept: I’ve provided a PoC as a C# project. You’ll need to also set up some machines to test this out. I’ve tested it in a simple environment of a Server 2016 server acting as a DC and a Windows 10 client. The serialized stream is tailored specifically for 4.6, I don’t know if it works anywhere else. 1) Compile the C# project and copy the binary to c:\service\FakeWmiServer.exe on the Client machine. 2) Run the following commands in admin Powershell on the client machine to configure the WMI service and add the server executable to the firewall. New-NetFirewallRule -DisplayName FAKEWMI -Enabled True -Profile Any -Direction Inbound -Program C:\service\FakeWMIService.exe -Protocol Tcp -LocalPort Any -RemotePort Any -LocalAddress Any -RemoteAddress Any New-NetFirewallRule -DisplayName FAKEWMI -Enabled True -Profile Any -Direction Outbound -Program C:\service\FakeWMIService.exe -Protocol Tcp -LocalPort Any -RemotePort Any -LocalAddress Any -RemoteAddress Any sc.exe config winmgmt binPath= c:\service\FakeWMIService.exe type= own Restart-Service winmgmt -Force 3) On the server start powershell. 4) On the server execute the PS command “Get-WmiObject -Class Win32_Process -ComputerName hostname” replacing hostname with the address of the client. Expected Result: WMI connection fails. Observed Result: A copy of CMD and Notepad is executed on the server in the context of the calling user. |
| id | SSV:92967 |
| last seen | 2017-11-19 |
| modified | 2017-04-19 |
| published | 2017-04-19 |
| reporter | Root |
| title | Windows: ManagementObject Arbitrary .NET Serialization RCE（CVE-2017-0160） |
References
- http://www.securityfocus.com/bid/97447
- http://www.securityfocus.com/bid/97447
- http://www.securitytracker.com/id/1038236
- http://www.securitytracker.com/id/1038236
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0160
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0160
- https://www.exploit-db.com/exploits/41903/
- https://www.exploit-db.com/exploits/41903/