CVE-2017-11767: Microsoft.ChakraCore ChakraCore Vulnerable To Privilege Escalation Vulnerability

CRITICAL
Advisory Identifier: GHSA-c79v-2rjq-965m
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CVSS 9.8
CWE-119
Published
Advisory Summary

CVE-2017-11767 is a CRITICAL (CVSS 9.8) chakracore vulnerable to privilege escalation vulnerability (CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer) affecting Microsoft.ChakraCore libraries in the NuGet ecosystem. The issue involves chakracore vulnerable to privilege escalation. Remediation is available by upgrading affected packages to version 1.6.2.

CVE-2017-11767 at a Glance

CVE Identifier CVE-2017-11767
GHSA Identifier GHSA-c79v-2rjq-965m
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
Affected Product Microsoft.ChakraCore
Package Ecosystem NuGet
Published Date
Last Updated

Security Impact

CVSS: 9.8

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:N/S:U/C:H/I:H/A:H).

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

How to Fix CVE-2017-11767

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: 1.6.2 
Upgrade Microsoft.ChakraCore to 1.6.2
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-2017-11767, 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 1.6.2), 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-119: Improper Restriction of Operations within the Bounds of a Memory Buffer, where the product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. this may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data. 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 allows an attacker to gain the same user rights as the current user, due to the way that the ChakraCore scripting engine handles objects in memory. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

CVE-2017-11767 Affected Microsoft.ChakraCore Versions

1 component(s)
Fixed Versions:
1.6.2
Product / Package Ecosystem Affected Versions Fixed Version
Microsoft.ChakraCore
nuget/Microsoft.ChakraCore
NuGet
< 1.6.2
1.6.2

References

NVD — CVE-2017-11767 NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-11767
Microsoft.ChakraCore Source Repository REPOSITORY
https://github.com/chakra-core/ChakraCore/pull/3727
Microsoft.ChakraCore Source Repository REPOSITORY
https://github.com/chakra-core/ChakraCore/pull/3727/commits/b3e3959d14814f42ee2197c504c322bcbe12347d
Security Fix Commit FIX COMMIT
https://github.com/chakra-core/ChakraCore/commit/b3e3959d14814f42ee2197c504c322bcbe12347d
Microsoft.ChakraCore Source Repository REPOSITORY
https://github.com/chakra-core/ChakraCore
msrc.microsoft.com/update-guide/en-us/... WEB
https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2017-11767
Microsoft.ChakraCore Security Information SECURITY
https://web.archive.org/web/20210124103810/http://www.securityfocus.com/bid/100838
Microsoft.ChakraCore Security Information SECURITY
https://web.archive.org/web/20211127230635/http://www.securitytracker.com/id/1039369

Frequently Asked Questions

What is CVE-2017-11767?
CVE-2017-11767 is a security vulnerability in Microsoft.ChakraCore involving ChakraCore vulnerable to privilege escalation under CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer.
Which Microsoft.ChakraCore versions are affected?
Affected versions include releases prior to 1.6.2 across affected packages: Microsoft.ChakraCore.
What version fixes CVE-2017-11767?
Upgrading to 1.6.2 (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 1.6.2. Upgrade your dependency to 1.6.2 or later.
What is the CVSS score of CVE-2017-11767?
CVE-2017-11767 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2017-11767?
CVE-2017-11767 is classified under CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer (The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.).
How can I check NuGet dependencies for CVE-2017-11767?
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-c79v-2rjq-965m",
  "modified" : "2023-10-10T15:00:23Z",
  "published" : "2022-05-13T01:42:32Z",
  "aliases" : [ "CVE-2017-11767" ],
  "summary" : "ChakraCore vulnerable to privilege escalation",
  "details" : "ChakraCore allows an attacker to gain the same user rights as the current user, due to the way that the ChakraCore scripting engine handles objects in memory. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.\n\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Microsoft.ChakraCore"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.6.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2017-11767"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/chakra-core/ChakraCore/pull/3727"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/chakra-core/ChakraCore/pull/3727/commits/b3e3959d14814f42ee2197c504c322bcbe12347d"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/chakra-core/ChakraCore/commit/b3e3959d14814f42ee2197c504c322bcbe12347d"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/chakra-core/ChakraCore"
  }, {
    "type" : "WEB",
    "url" : "https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2017-11767"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20210124103810/http://www.securityfocus.com/bid/100838"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20211127230635/http://www.securitytracker.com/id/1039369"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-119" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-26T19:37:50Z",
    "nvd_published_at" : "2017-11-02T19:29:00Z"
  }
}