Microsoft .NET Multiple Flaws Let Remote Users Execute Arbitrary Code and Local Users Bypass Security and Gain Elevated Privileges
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SecurityTracker Alert ID: 1041257 |
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SecurityTracker URL: http://securitytracker.com/id/1041257
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CVE Reference:
CVE-2018-8202, CVE-2018-8260, CVE-2018-8284, CVE-2018-8356
(Links to External Site)
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Date: Jul 10 2018
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Impact:
Execution of arbitrary code via network, User access via local system, User access via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 2.0 SP2, 3.5, 3.5.1, 4.5.2, 4.6, 4.7.2 Developer Pack; .NET Core 1.0, 1.1, 2.0; ASP.NET Core 1.0, 1.1, 2.0;
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Description:
Several vulnerabilities were reported in Microsoft .NET. A remote user can cause arbitrary code to be executed on the target user's system. A local user can obtain elevated privileges on the target system. A local user can bypass security restrictions.
A local user can run a specially crafted application to exploit a flaw in the activation of COM objects and gain elevated privileges [CVE-2018-8202].
A local user can present an expired certificate to bypass certificate validation on the target system [CVE-2018-8356].
A remote user can create a specially crafted file that, when opened by the target user via .NET, will trigger a flaw in the validation of source markup and execute arbitrary code [CVE-2018-8260].
A remote user can create a specially crafted file that, when opened by the target user via .NET, will trigger an input validation flaw and execute arbitrary code [CVE-2018-8284].
Lasse Trolle Borup of Langkjaer Cyber Defence and Soroush Dalili of NCC Group reported some of these vulnerabilities.
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Impact:
A remote user can create content that, when loaded by the target user, will execute arbitrary code on the target user's system.
A local user can obtain elevated privileges on the target system.
A local user can bypass security controls on the target system.
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Solution:
The vendor has issued a fix.
The Microsoft advisories are available at:
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8202
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8260
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8284
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8356
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Vendor URL: portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8202 (Links to External Site)
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Cause:
Access control error, Input validation error
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Underlying OS: Windows (2008), Windows (2012), Windows (2016), Windows (7), Windows (8), Windows (10)
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Message History:
None.
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Source Message Contents
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[Original Message Not Available for Viewing]
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