CVE-2018-8420
published 2018-09-13CVE-2018-8420: A remote code execution vulnerability exists when the Microsoft XML Core Services MSXML parser processes user input, aka "MS XML Remote Code Execution…
PriorityP263high8.8CVSS 3.0
AVNACLPRNUIRSUCHIHAH
EPSS
48.90%
98.7th percentile
A remote code execution vulnerability exists when the Microsoft XML Core Services MSXML parser processes user input, aka "MS XML Remote Code Execution Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.
Affected
54 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10_servers | — | — |
| microsoft | windows_10_servers | — | — |
| microsoft | windows_7 | — | — |
| microsoft | windows_7 | — | — |
| microsoft | windows_8.1 | — | — |
| microsoft | windows_8.1 | — | — |
| microsoft | windows_rt_8.1 | — | — |
| microsoft | windows_server | — | — |
| microsoft | windows_server | — | — |
| microsoft | windows_server | — | — |
| microsoft | windows_server | — | — |
Detection & IOCsextracted from sources · hover to see the quote
- →Vulnerability is triggered when MSXML parser processes user input via Internet Explorer parsing XML content — monitor for IE invoking MSXML through web browser interactions with untrusted/external XML content ↗
- →Attack vector is user clicking a malicious link delivered via email or instant message leading to a crafted website that invokes MSXML — monitor for IE spawning child processes or unusual MSXML activity following link clicks ↗
- →Exploitation assessed as 'More Likely' for both latest and older software releases — prioritize detection and patching on all supported Windows versions including Windows 7, 8.1, 10, Server 2008/2012/2016 ↗
- ·No in-the-wild exploitation confirmed at time of disclosure; however, exploitation likelihood is rated 'More Likely' for all release tracks — treat as high-priority patching target ↗
- ·The vulnerability resides in Microsoft XML Core Services (MSXML) parser input handling; the fix corrects input processing logic — unpatched systems remain exposed to remote code execution via crafted XML ↗
CVSS provenance
nvdv3.08.8HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.09.3CRITICALAV:N/AC:M/Au:N/C:C/I:C/A:C
vendor_msrc7.5HIGH
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Microsoft
MS XML Remote Code Execution Vulnerability
vendor_msrc·2018-09-11·CVSS 7.5
CVE-2018-8420 [HIGH] MS XML Remote Code Execution Vulnerability
MS XML Remote Code Execution Vulnerability
Description: A remote code execution vulnerability exists when the Microsoft XML Core Services MSXML parser processes user input. An attacker who successfully exploited the vulnerability could run malicious code remotely to take control of the user’s system.
To exploit the vulnerability, an attacker could host a specially crafted website designed to invoke MSXML through a web browser. However, an attacker would have no way to force a user to visit such a website. Instead, an attacker would typically have to convince a user to either click a link in an email message or instant message that would then take the user to the website. When Internet Explorer parses the XML content, an attacker could run malicious code remotely to take control of the use
GHSA
GHSA-43x2-2pcr-g799: A remote code execution vulnerability exists when the Microsoft XML Core Services MSXML parser processes user input, aka "MS XML Remote Code Execution
ghsa_unreviewed·2022-05-14
CVE-2018-8420 [HIGH] CWE-611 GHSA-43x2-2pcr-g799: A remote code execution vulnerability exists when the Microsoft XML Core Services MSXML parser processes user input, aka "MS XML Remote Code Execution
A remote code execution vulnerability exists when the Microsoft XML Core Services MSXML parser processes user input, aka "MS XML Remote Code Execution Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.
No detection rules found.
No public exploits indexed.
Trendmicro
September Patch Tuesday: Windows Fixes ALPC Bug
blogs_trendmicro·2018-09-12·CVSS 7.8
CVE-2018-8440 [HIGH] September Patch Tuesday: Windows Fixes ALPC Bug
Exploits y vulnerabilidades
## September Patch Tuesday: Windows Fixes ALPC Bug
September’s Patch Tuesday provides a security patch for CVE-2018-8440, an elevation of privilege vulnerability that occurs when Windows incorrectly handles calls to the Advanced Local Procedure Call (ALPC) interface.
By: Trend Micro Sep 12, 2018 Read time: ( words)
Save to Folio
September’s Patch Tuesday provides a security patch for CVE-2018-8440 , an elevation of privilege vulnerability that occurs when Windows incorrectly handles calls to the Advanced Local Procedure Call (ALPC) interface. This bug allows threat actors to run code with administrative privileges, install programs, or even create new accounts with full user rights. This bug’s source code has been publicly disclosed as of August 27 via Twit
Trendmicro
September Patch Tuesday: Windows Fixes ALPC Bug
blogs_trendmicro·2018-09-12·CVSS 7.8
CVE-2018-8440 [HIGH] September Patch Tuesday: Windows Fixes ALPC Bug
Exploits & Vulnerabilities
# September Patch Tuesday: Windows Fixes ALPC Bug
September’s Patch Tuesday provides a security patch for CVE-2018-8440, an elevation of privilege vulnerability that occurs when Windows incorrectly handles calls to the Advanced Local Procedure Call (ALPC) interface.
By: Trend Micro
2018/09/12
Read time: ( words)
Save to Folio
September’s Patch Tuesday provides a security patch for CVE-2018-8440, an elevation of privilege vulnerability that occurs when Windows incorrectly handles calls to the Advanced Local Procedure Call (ALPC) interface. This bug allows threat actors to run code with administrative privileges, install programs, or even create new accounts with full user rights. This bug’s source code has been publicly disclosed as of August 27 via Twitter
Trendmicro
September Patch Tuesday: Windows Fixes ALPC Bug
blogs_trendmicro·2018-09-12·CVSS 7.8
CVE-2018-8440 [HIGH] September Patch Tuesday: Windows Fixes ALPC Bug
Exploits & Vulnerabilities
## September Patch Tuesday: Windows Fixes ALPC Bug
September’s Patch Tuesday provides a security patch for CVE-2018-8440, an elevation of privilege vulnerability that occurs when Windows incorrectly handles calls to the Advanced Local Procedure Call (ALPC) interface.
By: Trend Micro Sep 12, 2018 Read time: ( words)
Save to Folio
September’s Patch Tuesday provides a security patch for CVE-2018-8440 , an elevation of privilege vulnerability that occurs when Windows incorrectly handles calls to the Advanced Local Procedure Call (ALPC) interface. This bug allows threat actors to run code with administrative privileges, install programs, or even create new accounts with full user rights. This bug’s source code has been publicly disclosed as of August 27 via Twitt
Trendmicro
September Patch Tuesday: Windows Fixes ALPC Bug
blogs_trendmicro·2018-09-12·CVSS 7.8
CVE-2018-8440 [HIGH] September Patch Tuesday: Windows Fixes ALPC Bug
Exploits & Vulnerabilities
## September Patch Tuesday: Windows Fixes ALPC Bug
September’s Patch Tuesday provides a security patch for CVE-2018-8440, an elevation of privilege vulnerability that occurs when Windows incorrectly handles calls to the Advanced Local Procedure Call (ALPC) interface.
By: Trend Micro 2018/09/12 Read time: ( words)
Save to Folio
September’s Patch Tuesday provides a security patch for CVE-2018-8440 , an elevation of privilege vulnerability that occurs when Windows incorrectly handles calls to the Advanced Local Procedure Call (ALPC) interface. This bug allows threat actors to run code with administrative privileges, install programs, or even create new accounts with full user rights. This bug’s source code has been publicly disclosed as of August 27 via Twitter
Trendmicro
September Patch Tuesday: Windows Fixes ALPC Bug
blogs_trendmicro·2018-09-12·CVSS 7.8
CVE-2018-8440 [HIGH] September Patch Tuesday: Windows Fixes ALPC Bug
Ausnutzung von Schwachstellen
## September Patch Tuesday: Windows Fixes ALPC Bug
September’s Patch Tuesday provides a security patch for CVE-2018-8440, an elevation of privilege vulnerability that occurs when Windows incorrectly handles calls to the Advanced Local Procedure Call (ALPC) interface.
By: Trend Micro Sep 12, 2018 Read time: ( words)
Save to Folio
September’s Patch Tuesday provides a security patch for CVE-2018-8440 , an elevation of privilege vulnerability that occurs when Windows incorrectly handles calls to the Advanced Local Procedure Call (ALPC) interface. This bug allows threat actors to run code with administrative privileges, install programs, or even create new accounts with full user rights. This bug’s source code has been publicly disclosed as of August 27 via Tw
Talos
Microsoft Patch Tuesday - September 2018
blogs_talos·2018-09-11·CVSS 8.4
[HIGH] Microsoft Patch Tuesday - September 2018
Microsoft released its monthly set of security updates today for a variety of its products that address a variety of bugs. The latest Patch Tuesday covers 61 vulnerabilities, 17 of which are rated "critical," 43 that are rated "important" and one that is considered to have "moderate" severity.
The advisories cover bugs in the Internet Explorer web browser, Jet Database Engine and the Chakra scripting engine, among other products and software.
This update also includes two critical advisories, one of which covers security updates to Adobe Flash, and another that deals with a denial-of-service vulnerability in the Microsoft Windows operating system.
## Critical vulnerabilitiesMicrosoft released coverage for 17 critical bugs. Cisco Talos believes 16 of these are of special importance and n
Talos
Microsoft Patch Tuesday - September 2018
blogs_talos·2018-09-11·CVSS 8.4
[HIGH] Microsoft Patch Tuesday - September 2018
## Microsoft Patch Tuesday - September 2018
Microsoft released its monthly set of security updates today for a variety of its products that address a variety of bugs. The latest Patch Tuesday covers 61 vulnerabilities, 17 of which are rated "critical," 43 that are rated "important" and one that is considered to have "moderate" severity.
The advisories cover bugs in the Internet Explorer web browser, Jet Database Engine and the Chakra scripting engine, among other products and software.
This update also includes two critical advisories, one of which covers security updates to Adobe Flash, and another that deals with a denial-of-service vulnerability in the Microsoft Windows operating system.
## Critical vulnerabilities Microsoft released coverage for 17 critical bugs. Cisco Talos believ
Zscaler
Zscaler protects against 10 new vulnerabilities for Chakra Scripting Engine, Internet Explorer, MS XML, Windows & Microsoft Edge. | Zscaler
blogs_zscaler·CVSS 7.5
[HIGH] Zscaler protects against 10 new vulnerabilities for Chakra Scripting Engine, Internet Explorer, MS XML, Windows & Microsoft Edge. | Zscaler
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http://www.securityfocus.com/bid/105259http://www.securitytracker.com/id/1041627https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8420http://www.securityfocus.com/bid/105259http://www.securitytracker.com/id/1041627https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8420
2018-09-13
Published