CVE-2018-8466 : A remote code execution vulnerability exists in the way that the Chakra scriptin

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.

Published 2018-09-13 00:29:07

Updated 2020-08-24 17:37:01

Source Microsoft Corporation

View at NVD, CVE.org

Vulnerability category: Memory CorruptionExecute code

Products affected by CVE-2018-8466

Microsoft » Edge » Version: N/A
cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:*
Matching versions
When used together with: Microsoft » Windows 10 » Version: N/A
When used together with: Microsoft » Windows 10 » Version: 1607
When used together with: Microsoft » Windows 10 » Version: 1703
When used together with: Microsoft » Windows 10 » Version: 1709
When used together with: Microsoft » Windows 10 » Version: 1803
When used together with: Microsoft » Windows Server 2016 » Version: N/A
Microsoft » Chakracore
Versions up to, including, (<=) 1.10.1
cpe:2.3:a:microsoft:chakracore:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2018-8466

EPSS FAQ

84.68%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 99 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-8466

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.6	HIGH	AV:N/AC:H/Au:N/C:C/I:C/A:C	4.9	10.0	NIST
Access Vector: Network Access Complexity: High Authentication: None Confidentiality Impact: Complete Integrity Impact: Complete Availability Impact: Complete
7.5	HIGH	CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H	1.6	5.9	NIST
Attack Vector: Network Attack Complexity: High Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2018-8466

CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2018-8466

http://www.securitytracker.com/id/1041623

Microsoft Edge Multiple Bugs Let Remote Users Execute Arbitrary Code, Obtain Potentially Sensitive Information, Gain Elevated Privileges, and Spoof Content on the Target System - SecurityTracker
Third Party Advisory;VDB Entry

CVEs referencing this url
http://www.securityfocus.com/bid/105243

Microsoft ChakraCore Scripting Engine CVE-2018-8466 Remote Memory Corruption Vulnerability
Third Party Advisory;VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8466

CVE-2018-8466 | Chakra Scripting Engine Memory Corruption Vulnerability
Patch;Vendor Advisory
https://www.exploit-db.com/exploits/45571/

Microsoft Edge Chakra JIT - 'BailOutOnInvalidatedArrayHeadSegment' Check Bypass
VDB Entry;Third Party Advisory

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Vulnerability Details : CVE-2018-8466

Products affected by CVE-2018-8466

Exploit prediction scoring system (EPSS) score for CVE-2018-8466

CVSS scores for CVE-2018-8466

CWE ids for CVE-2018-8466

References for CVE-2018-8466