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CVE-2017-11871 — Vulnerability in Microsoft.ChakraCore — CVE Details

HIGH

Chakra Core vulnerable to privilege escalation due to reading an invalid pointer

Published May 17, 2022Updated February 16, 2024Source: osv

Summary

ChakraCore and Microsoft Edge in Windows 10 1703, 1709, and Windows Server, version 1709 allows an attacker to gain the same user rights as the current user, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". When trying to get `inlineCache`s for a `ScriptFunctionWithInlineCache`, if the function got redefered and was not reparsed, the function body (and `inlineCache` on function body) won’t be there, potentially leading to a privilege escalation. This CVE ID is unique from CVE-2017-11836, CVE-2017-11837, CVE-2017-11838, CVE-2017-11839, CVE-2017-11840, CVE-2017-11841, CVE-2017-11843, CVE-2017-11846, CVE-2017-11858, CVE-2017-11859, CVE-2017-11861, CVE-2017-11862, CVE-2017-11866, CVE-2017-11869, CVE-2017-11870, and CVE-2017-11873.

Advisory Timeline

  • First published May 17, 2022 (1609 days ago).
  • Last revised February 16, 2024 — 640 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

NuGet
Update Microsoft.ChakraCore to 1.7.4 or later
dotnet add package Microsoft.ChakraCore --version 1.7.4

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: nuget (1).

PackageEcosystemAffectedFixed In
Microsoft.ChakraCore
nuget
1.2.0, 1.2.1, 1.2.2, 1.2.3 (+20 more)1.7.4

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2017-11871?
Chakra Core vulnerable to privilege escalation due to reading an invalid pointer This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.5/10).
How do I check if my project is affected by CVE-2017-11871?
CVE-2017-11871 affects Microsoft.ChakraCore. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2017-11871 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
7.5

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-43qp-hphf-5rjw

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