CVE-2018-8466
published 2018-09-13CVE-2018-8466: A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting…
PriorityP268high7.5CVSS 3.0
AVNACHPRNUIRSUCHIHAH
EXPLOIT
EPSS
69.02%
99.3th percentile
A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-8367, CVE-2018-8465, CVE-2018-8467.
Affected
25 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | chakracore | <= 1.10.1 | — |
| microsoft | chakracore | — | — |
| microsoft | microsoft_edge | — | — |
| microsoft | microsoft_edge | — | — |
| microsoft | microsoft_edge | — | — |
| microsoft | microsoft_edge | — | — |
| microsoft | microsoft_edge | — | — |
| microsoft | microsoft_edge | — | — |
| microsoft | microsoft_edge | — | — |
| microsoft | microsoft_edge | — | — |
| microsoft | microsoft_edge | — | — |
| microsoft | microsoft_edge | — | — |
| microsoft | microsoft_edge | — | — |
| msrc | chakracore | — | — |
| msrc | microsoft_edge_on_windows_10_for_32-bit_systems | — | — |
| msrc | microsoft_edge_on_windows_10_for_x64-based_systems | — | — |
| msrc | microsoft_edge_on_windows_10_version_1607_for_32-bit_systems | — | — |
| msrc | microsoft_edge_on_windows_10_version_1607_for_x64-based_systems | — | — |
| msrc | microsoft_edge_on_windows_10_version_1703_for_32-bit_systems | — | — |
| msrc | microsoft_edge_on_windows_10_version_1703_for_x64-based_systems | — | — |
| msrc | microsoft_edge_on_windows_10_version_1709_for_32-bit_systems | — | — |
| msrc | microsoft_edge_on_windows_10_version_1709_for_x64-based_systems | — | — |
| msrc | microsoft_edge_on_windows_10_version_1803_for_32-bit_systems | — | — |
| msrc | microsoft_edge_on_windows_10_version_1803_for_x64-based_systems | — | — |
| msrc | microsoft_edge_on_windows_server_2016 | — | — |
Detection & IOCsextracted from sources · hover to see the quote
commandlet x_obj = document.body.appendChild(document.createElement('iframe')).contentWindow.eval('({})');↗
- →Detect cross-site (CrossSite vtable replacement) array type confusion in Chakra JIT: monitor for iframe-based cross-window object injection combined with array length manipulation via obfuscated property access (e.g., split string concatenation for 'length'). ↗
- →Look for JIT warm-up loops (~10000 iterations) followed by a final out-of-loop call with the same array — a classic JIT spray/type confusion pattern used to trigger the optimized (unchecked) code path. ↗
- →Flag use of contentWindow.eval() on a cross-origin or same-page iframe to produce a cross-site object, which is the primitive used to replace the vtable and bypass BailOutOnInvalidatedArrayHeadSegment. ↗
- →Monitor for in-place array type conversion triggered by assigning an object to a float array element (arr[1] = {}), which is the final step to achieve memory corruption after the JIT check bypass. ↗
- →The vulnerability is specific to Microsoft Edge (HTML-based) with ChakraCore prior to v1.11.1; patch level detection should check for KB4457138, KB4457128, KB4457142, KB4457132, KB4457131. ↗
- ·Exploit status at time of patch release was 'Publicly Disclosed: No; Exploited: No' but rated 'Exploitation More Likely' for the latest software release — treat as high-priority for Edge/ChakraCore deployments. ↗
- ·This CVE is distinct from three related Chakra JIT vulnerabilities (CVE-2018-8367, CVE-2018-8465, CVE-2018-8467); rules targeting this specific vtable/BailOut bypass should not be conflated with those. ↗
CVSS provenance
nvdv3.07.5HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.07.6HIGHAV:N/AC:H/Au:N/C:C/I:C/A:C
ghsa7.5HIGH
osv7.5HIGH
vendor_msrc4.2MEDIUM
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OSV
ChakraCore RCE Vulnerability
osv·2022-05-13·CVSS 7.5
CVE-2018-8367 [HIGH] ChakraCore RCE Vulnerability
ChakraCore RCE Vulnerability
A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-8465, CVE-2018-8466, CVE-2018-8467.
OSV
ChakraCore RCE Vulnerability
osv·2022-05-13·CVSS 7.5
CVE-2018-8465 [HIGH] ChakraCore RCE Vulnerability
ChakraCore RCE Vulnerability
A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-8367, CVE-2018-8466, CVE-2018-8467.
OSV
ChakraCore RCE Vulnerability
osv·2022-05-13·CVSS 7.5
CVE-2018-8466 [HIGH] ChakraCore RCE Vulnerability
ChakraCore RCE Vulnerability
A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-8367, CVE-2018-8465, CVE-2018-8467.
GHSA
ChakraCore RCE Vulnerability
ghsa·2022-05-13·CVSS 7.5
CVE-2018-8467 [HIGH] CWE-787 ChakraCore RCE Vulnerability
ChakraCore RCE Vulnerability
A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-8367, CVE-2018-8465, CVE-2018-8466.
GHSA
ChakraCore RCE Vulnerability
ghsa·2022-05-13·CVSS 7.5
CVE-2018-8466 [HIGH] CWE-787 ChakraCore RCE Vulnerability
ChakraCore RCE Vulnerability
A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-8367, CVE-2018-8465, CVE-2018-8467.
OSV
ChakraCore RCE Vulnerability
osv·2022-05-13·CVSS 7.5
CVE-2018-8467 [HIGH] ChakraCore RCE Vulnerability
ChakraCore RCE Vulnerability
A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-8367, CVE-2018-8465, CVE-2018-8466.
GHSA
ChakraCore RCE Vulnerability
ghsa·2022-05-13·CVSS 7.5
CVE-2018-8465 [HIGH] CWE-787 ChakraCore RCE Vulnerability
ChakraCore RCE Vulnerability
A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-8367, CVE-2018-8466, CVE-2018-8467.
GHSA
ChakraCore RCE Vulnerability
ghsa·2022-05-13·CVSS 7.5
CVE-2018-8367 [HIGH] CWE-787 ChakraCore RCE Vulnerability
ChakraCore RCE Vulnerability
A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-8465, CVE-2018-8466, CVE-2018-8467.
Microsoft
Chakra Scripting Engine Memory Corruption Vulnerability
vendor_msrc·2018-09-11·CVSS 4.2
CVE-2018-8466 [HIGH] Chakra Scripting Engine Memory Corruption Vulnerability
Chakra Scripting Engine Memory Corruption Vulnerability
Description: A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge (HTML-based). 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.
In a web-based attack scenario, an attacker could host a
No detection rules found.
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/105243http://www.securitytracker.com/id/1041623https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8466https://www.exploit-db.com/exploits/45571/http://www.securityfocus.com/bid/105243http://www.securitytracker.com/id/1041623https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8466https://www.exploit-db.com/exploits/45571/
2018-09-13
Published