The file extension check in GNUBoard 3.40 and earlier only verifies extensions that contain all lowercase letters, which allows remote attackers to upload arbitrary files via file extensions that include uppercase letters.
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSir Gnuboard
APPSir≤ 3.40
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CHECK WITH VENDOR
No clear patch data available. Check vendor references.
CWE
References
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