CVE-2018-0939: Microsoft.ChakraCore ChakraCore Information Disclosure Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-xgcc-r2f3-rq6p
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CVSS 4.3
CWE-787
Published
Advisory Summary

CVE-2018-0939 is a MODERATE (CVSS 4.3) chakracore information disclosure vulnerability vulnerability (CWE-787: Out-of-bounds Write) affecting Microsoft.ChakraCore libraries in the NuGet ecosystem. The issue involves chakracore information disclosure vulnerability. Remediation is available by upgrading affected packages to version 1.8.2.

CVE-2018-0939 at a Glance

CVE Identifier CVE-2018-0939
GHSA Identifier GHSA-xgcc-r2f3-rq6p
Severity MODERATE
CVSS v3.1 Base Score 4.3
CWE Classification CWE-787: Out-of-bounds Write
Affected Product Microsoft.ChakraCore
Package Ecosystem NuGet
Published Date
Last Updated

Security Impact

CVSS: 4.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2018-0939

To remediate this vulnerability, upgrade all affected Microsoft.ChakraCore dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Microsoft.ChakraCore fixed: 1.8.2 
Upgrade Microsoft.ChakraCore to 1.8.2
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for Microsoft.ChakraCore

How to Check if You Are Affected

To determine whether your application is affected by CVE-2018-0939, inspect your project dependencies for Microsoft.ChakraCore:

inspect dependencies for Microsoft.ChakraCore

Analyze the terminal output to locate any version of Microsoft.ChakraCore in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.8.2), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-787: Out-of-bounds Write, where the product writes data past the end, or before the beginning, of the intended buffer. In Microsoft.ChakraCore, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

ChakraCore and Microsoft Edge in Windows 10 1703 and 1709 allow information disclosure, due to how the scripting engine handles objects in memory, aka "Scripting Engine Information Disclosure Vulnerability". This CVE ID is unique from CVE-2018-0891.

CVE-2018-0939 Affected Microsoft.ChakraCore Versions

1 component(s)
Fixed Versions:
1.8.2
Product / Package Ecosystem Affected Versions Fixed Version
Microsoft.ChakraCore
nuget/Microsoft.ChakraCore
NuGet
< 1.8.2
1.8.2

References

NVD — CVE-2018-0939 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-0939
Security Fix Commit FIX COMMIT
https://github.com/chakra-core/ChakraCore/commit/090277e7a5ea1d938777acb92e7b6759936ea974
Microsoft.ChakraCore Source Repository REPOSITORY
https://github.com/chakra-core/ChakraCore
Microsoft.ChakraCore Security Information SECURITY
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0939
Microsoft.ChakraCore Security Information SECURITY
https://web.archive.org/web/20201021051922/http://www.securitytracker.com/id/1040507
Microsoft.ChakraCore Security Information SECURITY
https://web.archive.org/web/20210124145017/http://www.securityfocus.com/bid/103305

Frequently Asked Questions

What is CVE-2018-0939?
CVE-2018-0939 is a security vulnerability in Microsoft.ChakraCore involving ChakraCore information disclosure vulnerability under CWE-787: Out-of-bounds Write.
Which Microsoft.ChakraCore versions are affected?
Affected versions include releases prior to 1.8.2 across affected packages: Microsoft.ChakraCore.
What version fixes CVE-2018-0939?
Upgrading to 1.8.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is Microsoft.ChakraCore affected?
Yes, Microsoft.ChakraCore is affected in releases prior to 1.8.2. Upgrade your dependency to 1.8.2 or later.
What is the CVSS score of CVE-2018-0939?
CVE-2018-0939 has a CVSS v3.1 base score of 4.3 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2018-0939?
CVE-2018-0939 is classified under CWE-787: Out-of-bounds Write (The product writes data past the end, or before the beginning, of the intended buffer.).
How can I check NuGet dependencies for CVE-2018-0939?
Run the dependency tree command: 'inspect dependencies for Microsoft.ChakraCore'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-xgcc-r2f3-rq6p",
  "modified" : "2023-10-05T19:29:32Z",
  "published" : "2022-05-13T01:18:38Z",
  "aliases" : [ "CVE-2018-0939" ],
  "summary" : "ChakraCore information disclosure vulnerability",
  "details" : "ChakraCore and Microsoft Edge in Windows 10 1703 and 1709 allow information disclosure, due to how the scripting engine handles objects in memory, aka \"Scripting Engine Information Disclosure Vulnerability\". This CVE ID is unique from CVE-2018-0891.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Microsoft.ChakraCore"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.8.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-0939"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/chakra-core/ChakraCore/commit/090277e7a5ea1d938777acb92e7b6759936ea974"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/chakra-core/ChakraCore"
  }, {
    "type" : "WEB",
    "url" : "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0939"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20201021051922/http://www.securitytracker.com/id/1040507"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20210124145017/http://www.securityfocus.com/bid/103305"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-787" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-20T22:19:42Z",
    "nvd_published_at" : "2018-03-14T17:29:00Z"
  }
}