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Chakra JIT server Privilege Escalation

High severity GitHub Reviewed Published May 13, 2022 to the GitHub Advisory Database • Updated Sep 28, 2023

Package

nuget Microsoft.ChakraCore (NuGet)

Affected versions

< 1.11.6

Patched versions

1.11.6

Description

A vulnerability exists in Microsoft Chakra JIT server, aka 'Scripting Engine Elevation of Privileges Vulnerability'.

References

Published by the National Vulnerability Database Mar 5, 2019
Published to the GitHub Advisory Database May 13, 2022
Reviewed Jul 19, 2023
Last updated Sep 28, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(76th percentile)

Weaknesses

No CWEs

CVE ID

CVE-2019-0649

GHSA ID

GHSA-6c6r-39cv-x5fq

Source code

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