CVE-2018-8556: ChakraCore RCE Vulnerability
7.5
CVSS Score
3.0
Basic Information
CVE ID
GHSA ID
EPSS Score
0.89812%
CWE
Published
5/13/2022
Updated
10/6/2023
KEV Status
No
Technology
C#
Technical Details
CVSS Vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
---|---|---|---|
Microsoft.ChakraCore | nuget | < 1.11.3 | 1.11.3 |
Vulnerability Intelligence
Miggo AI
Root Cause Analysis
The vulnerability stems from an improper array type check in the bailout decision logic. The patch changes the condition from checking 'IsAnyArray() && GetObjectType() != ObjectWithArray' to 'IsArray()', indicating the original check was insufficient. This function
determines whether to bail out during JIT optimization when array structures might change, and the flawed check could allow dangerous optimizations leading to out-of-bounds writes.