ChakraCore RCE Vulnerability

Description

The Microsoft (1) Chakra JavaScript, (2) JScript, and (3) VBScript engines, as used in Microsoft Internet Explorer 10 and 11 and Microsoft Edge, allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Scripting Engine Memory Corruption Vulnerability."

Basic information

Type
reviewed
Severity
high
Advisory on GitHub
Open advisory ↗
Repository advisory
Source code
Browse source ↗
Published (advisory)
2022-05-14 02:24:35 UTC
Updated
2023-11-02 19:41:14 UTC
GitHub reviewed
2023-07-31 20:29:04 UTC
NVD published
2016-06-16 01:59:00 UTC

EPSS Score

Score Percentile
14.92% 94.50%

CVSS Scores

Base score Version Severity Vector
7.5 3.0
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.

Identifiers

CWEs

CWE id Name
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
nuget Microsoft.ChakraCore < 1.2.0.0 1.2.0.0

References

cvelogic Threat Intelligence