CVE-2018-8319: Msrcrypto Sensitive Data Exposure Vulnerability

CRITICAL
Advisory Identifier: GHSA-qg3g-2mgh-33j8
Share
CVSS 9.8
CWE-682
Published
Advisory Summary

CVE-2018-8319 is a CRITICAL (CVSS 9.8) sensitive data exposure vulnerability (CWE-682: Incorrect Calculation) affecting Msrcrypto libraries in the npm ecosystem. The issue involves sensitive data exposure in msrcrypto. Remediation is available by upgrading affected packages to version 1.4.1.

CVE-2018-8319 at a Glance

CVE Identifier CVE-2018-8319
GHSA Identifier GHSA-qg3g-2mgh-33j8
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-682: Incorrect Calculation
Affected Product Msrcrypto
Package Ecosystem npm
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-2018-8319

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

msrcrypto fixed: 1.4.1 
npm install msrcrypto@1.4.1
Verify Direct and Transitive Dependencies

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

npm ls msrcrypto

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2018-8319, inspect your project dependencies using npm:

npm ls msrcrypto

Analyze the terminal output to locate any version of Msrcrypto in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.4.1), your application is affected.

Note: The npm ls msrcrypto command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-682: Incorrect Calculation, where the product performs a calculation that generates incorrect or unintended results that are later used in security-critical decisions or resource management. In Msrcrypto, 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

Versions of `msrcrypto` prior to 1.4.1 are vulnerable to Sensitive Data Exposure. The package's Elliptic Curve Cryptography (ECC) implementation may leak information about a server's private ECC key. It can also allow attackers to craft invalid ECDSA signatures that pass as valid. There is no published proof-of-concept for this vulnerability. ## Recommendation Upgrade to version 1.4.1 or later.

CVE-2018-8319 Affected Msrcrypto Versions

1 component(s)
Fixed Versions:
1.4.1
Product / Package Ecosystem Affected Versions Fixed Version
msrcrypto
npm/msrcrypto
npm
< 1.4.1
1.4.1

References

NVD — CVE-2018-8319 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-8319
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-qg3g-2mgh-33j8
Msrcrypto Security Information SECURITY
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8319
www.npmjs.com/advisories/1112 WEB
https://www.npmjs.com/advisories/1112
Msrcrypto Security Information SECURITY
http://www.securityfocus.com/bid/104655
Msrcrypto Security Information SECURITY
http://www.securitytracker.com/id/1041268

Frequently Asked Questions

What is CVE-2018-8319?
CVE-2018-8319 is a security vulnerability in Msrcrypto involving Sensitive Data Exposure in msrcrypto under CWE-682: Incorrect Calculation.
Which Msrcrypto versions are affected?
Affected versions include releases prior to 1.4.1 across affected packages: msrcrypto.
What version fixes CVE-2018-8319?
Upgrading to 1.4.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is msrcrypto affected?
Yes, msrcrypto is affected in releases prior to 1.4.1. Upgrade your dependency to 1.4.1 or later.
What is the CVSS score of CVE-2018-8319?
CVE-2018-8319 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-2018-8319?
CVE-2018-8319 is classified under CWE-682: Incorrect Calculation (The product performs a calculation that generates incorrect or unintended results that are later used in security-critical decisions or resource management.).
How can I check npm dependencies for CVE-2018-8319?
Run the dependency tree command: 'npm ls msrcrypto'. 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-qg3g-2mgh-33j8",
  "modified" : "2021-09-16T19:58:01Z",
  "published" : "2018-09-10T15:19:49Z",
  "aliases" : [ "CVE-2018-8319" ],
  "summary" : "Sensitive Data Exposure in msrcrypto",
  "details" : "Versions of `msrcrypto` prior to 1.4.1 are vulnerable to Sensitive Data Exposure. The package's Elliptic Curve Cryptography (ECC) implementation may leak information about a server's private ECC key. It can also allow attackers to craft invalid ECDSA signatures that pass as valid. There is no published proof-of-concept for this vulnerability.\n\n\n## Recommendation\n\nUpgrade to version 1.4.1 or later.",
  "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" : "npm",
      "name" : "msrcrypto"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.4.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-8319"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-qg3g-2mgh-33j8"
  }, {
    "type" : "WEB",
    "url" : "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8319"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/1112"
  }, {
    "type" : "WEB",
    "url" : "http://www.securityfocus.com/bid/104655"
  }, {
    "type" : "WEB",
    "url" : "http://www.securitytracker.com/id/1041268"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-682" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T21:51:47Z",
    "nvd_published_at" : null
  }
}