CVE-2019-10807: Blamer Improper Neutralization Of Special Elements Vulnerability

CRITICAL
Advisory Identifier: GHSA-8cxp-cjm8-fj36
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CVSS 9.8
CWE-78
Published
Advisory Summary

CVE-2019-10807 is a CRITICAL (CVSS 9.8) improper neutralization of special elements vulnerability (CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')) affecting Blamer libraries in the npm ecosystem. The issue involves improper neutralization of special elements used in an os command in blamer. Remediation is available by upgrading affected packages to version 1.0.1.

CVE-2019-10807 at a Glance

CVE Identifier CVE-2019-10807
GHSA Identifier GHSA-8cxp-cjm8-fj36
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Product Blamer
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:3.1/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-2019-10807

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

blamer fixed: 1.0.1 
npm install blamer@1.0.1
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 blamer

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2019-10807, inspect your project dependencies using npm:

npm ls blamer

Analyze the terminal output to locate any version of Blamer in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.0.1), your application is affected.

Note: The npm ls blamer 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-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), where the product constructs all or part of an os command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended os command when it is sent to a downstream component. In Blamer, 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

Blamer versions prior to 1.0.1 allows execution of arbitrary commands. It is possible to inject arbitrary commands as part of the arguments provided to blamer.

CVE-2019-10807 Affected Blamer Versions

1 component(s)
Fixed Versions:
1.0.1
Product / Package Ecosystem Affected Versions Fixed Version
blamer
npm/blamer
npm
< 1.0.1
1.0.1

References

NVD — CVE-2019-10807 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-10807
Security Fix Commit FIX COMMIT
https://github.com/kucherenko/blamer/commit/5fada8c9b6986ecd28942b724fa682e77ce1e11c
Blamer Source Repository REPOSITORY
https://github.com/kucherenko/blamer
snyk.io/vuln/snyk-js-blamer... WEB
https://snyk.io/vuln/SNYK-JS-BLAMER-559541

Frequently Asked Questions

What is CVE-2019-10807?
CVE-2019-10807 is a security vulnerability in Blamer involving Improper Neutralization of Special Elements used in an OS Command in Blamer under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
Which Blamer versions are affected?
Affected versions include releases prior to 1.0.1 across affected packages: blamer.
What version fixes CVE-2019-10807?
Upgrading to 1.0.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is blamer affected?
Yes, blamer is affected in releases prior to 1.0.1. Upgrade your dependency to 1.0.1 or later.
What is the CVSS score of CVE-2019-10807?
CVE-2019-10807 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2019-10807?
CVE-2019-10807 is classified under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.).
How can I check npm dependencies for CVE-2019-10807?
Run the dependency tree command: 'npm ls blamer'. 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-8cxp-cjm8-fj36",
  "modified" : "2022-06-28T15:22:16Z",
  "published" : "2022-05-24T17:10:48Z",
  "aliases" : [ "CVE-2019-10807" ],
  "summary" : "Improper Neutralization of Special Elements used in an OS Command in Blamer",
  "details" : "Blamer versions prior to 1.0.1 allows execution of arbitrary commands. It is possible to inject arbitrary commands as part of the arguments provided to blamer.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "blamer"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.0.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-10807"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/kucherenko/blamer/commit/5fada8c9b6986ecd28942b724fa682e77ce1e11c"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/kucherenko/blamer"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-BLAMER-559541"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-78" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-06-28T15:22:16Z",
    "nvd_published_at" : "2020-03-11T22:23:00Z"
  }
}