CVE-2019-10777: Aws lambda OS Command Injection Vulnerability

CRITICAL
Advisory Identifier: GHSA-934x-72xh-5hrg
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CVSS 9.8
CWE-78
Published
Advisory Summary

CVE-2019-10777 is a CRITICAL (CVSS 9.8) os command injection vulnerability (CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')) affecting Aws lambda libraries in the npm ecosystem. The issue involves os command injection in aws-lambda. Remediation is available by upgrading affected packages to version 1.0.5.

CVE-2019-10777 at a Glance

CVE Identifier CVE-2019-10777
GHSA Identifier GHSA-934x-72xh-5hrg
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 Aws lambda
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-2019-10777

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

aws-lambda fixed: 1.0.5 
npm install aws-lambda@1.0.5
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 aws-lambda

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2019-10777, inspect your project dependencies using npm:

npm ls aws-lambda

Analyze the terminal output to locate any version of Aws lambda in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.0.5), your application is affected.

Note: The npm ls aws-lambda 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 Aws lambda, 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

In aws-lambda versions prior to version 1.0.5, the "config.FunctioName" is used to construct the argument used within the "exec" function without any sanitization. It is possible for a user to inject arbitrary commands to the "zipCmd" used within "config.FunctionName".

CVE-2019-10777 Affected Aws lambda Versions

1 component(s)
Fixed Versions:
1.0.5
Product / Package Ecosystem Affected Versions Fixed Version
aws-lambda
npm/aws-lambda
npm
< 1.0.5
1.0.5

References

NVD — CVE-2019-10777 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-10777
Aws lambda Source Repository REPOSITORY
https://github.com/awspilot/cli-lambda-deploy
snyk.io/vuln/snyk-js-awslam... WEB
https://snyk.io/vuln/SNYK-JS-AWSLAMBDA-540839

Frequently Asked Questions

What is CVE-2019-10777?
CVE-2019-10777 is a security vulnerability in Aws lambda involving OS command injection in aws-lambda under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
Which Aws lambda versions are affected?
Affected versions include releases prior to 1.0.5 across affected packages: aws-lambda.
What version fixes CVE-2019-10777?
Upgrading to 1.0.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is aws-lambda affected?
Yes, aws-lambda is affected in releases prior to 1.0.5. Upgrade your dependency to 1.0.5 or later.
What is the CVSS score of CVE-2019-10777?
CVE-2019-10777 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-2019-10777?
CVE-2019-10777 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-2019-10777?
Run the dependency tree command: 'npm ls aws-lambda'. 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-934x-72xh-5hrg",
  "modified" : "2021-08-19T17:15:08Z",
  "published" : "2020-02-14T23:09:45Z",
  "aliases" : [ "CVE-2019-10777" ],
  "summary" : "OS command injection in aws-lambda",
  "details" : "In aws-lambda versions prior to version 1.0.5, the \"config.FunctioName\" is used to construct the argument used within the \"exec\" function without any sanitization. It is possible for a user to inject arbitrary commands to the \"zipCmd\" used within \"config.FunctionName\".",
  "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" : "aws-lambda"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.0.5"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.0.4"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-10777"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/awspilot/cli-lambda-deploy"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-AWSLAMBDA-540839"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-78" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-02-13T19:57:58Z",
    "nvd_published_at" : null
  }
}