Microsoft Windows up to Server 2016 VBScript Engine memory corruption
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
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6.6 | $0-$5k | 0.00 |
A vulnerability classified as critical was found in Microsoft Windows (Operating System). This vulnerability affects an unknown part of the component VBScript Engine. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability.
The bug was discovered 05/08/2018. The weakness was disclosed 05/08/2018 by Core Security with Core Security as confirmed security update guide (Website). The advisory is available at portal.msrc.microsoft.com. This vulnerability was named CVE-2018-8174 since 03/14/2018. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are unknown but a public exploit is available. The advisory points out:
A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
It is possible to download the exploit at exploit-db.com. It is declared as highly functional. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 109610 (KB4103726: Windows Server 2012 May 2018 Security 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 91447 (Microsoft Windows Security Update May 2018). This issue was added on 02/15/2022 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 08/15/2022:
Apply updates per vendor instructions.
Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.
The vulnerability is also documented in the databases at Tenable (109610) and Exploit-DB (44741). The entries 117441, 117443, 117444 and 117450 are pretty similar.
Product
Type
Vendor
Name
Version
- 7 SP1
- 8.1
- 10
- 10 1607
- 10 1703
- 10 1709
- 10 1803
- RT 8.1
- Server 1709
- Server 1803
- Server 2008 R2
- Server 2008 SP2
- Server 2012
- Server 2012 R2
- Server 2016
License
CPE 2.3
CPE 2.2
Video
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
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CVSSv3
VulDB Meta Base Score: 6.7VulDB Meta Temp Score: 6.6
VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍
Vendor Base Score (Microsoft): 7.5
Vendor Vector (Microsoft): 🔍
NVD Base Score: 7.5
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CVSSv2
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Exploiting
Class: Memory corruptionCWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Access: Public
Status: Highly functional
Download: 🔍
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0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Nessus ID: 109610
Nessus Name: KB4103726: Windows Server 2012 May 2018 Security Update
Nessus File: 🔍
Nessus Risk: 🔍
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Nessus Context: 🔍
OpenVAS ID: 52254
OpenVAS Name: Microsoft Windows Multiple Vulnerabilities (KB4103725)
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Threat Intelligence
Interest: 🔍Active Actors: 🔍
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Countermeasures
Recommended: PatchStatus: 🔍
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Timeline
03/14/2018 🔍04/23/2018 🔍
05/08/2018 🔍
05/08/2018 🔍
05/08/2018 🔍
05/08/2018 🔍
05/09/2018 🔍
05/09/2018 🔍
04/22/2024 🔍
Sources
Vendor: microsoft.comProduct: microsoft.com
Advisory: portal.msrc.microsoft.com
Researcher: Core Security
Organization: Core Security
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2018-8174 (🔍)
OVAL: 🔍
SecurityFocus: 103998 - Microsoft Internet Explorer VBScript Engine CVE-2018-8174 Arbitrary Code Execution Vulnerability
scip Labs: https://www.scip.ch/en/?labs.20161215
See also: 🔍
Entry
Created: 05/09/2018 14:00Updated: 04/22/2024 21:51
Changes: 05/09/2018 14:00 (88), 02/09/2020 10:07 (10), 03/08/2023 21:55 (4), 04/22/2024 21:51 (27)
Complete: 🔍
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