| Title | Gabriels FTP Server Gabriels FTP Server 1.2 Denial of Service |
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| Description | His technique works fine against Windows XP Professional Service Pack 2 and 3 (English).
For this exploit I have tried several strategies to increase reliability and performance:
Jump to a static 'call esp'
Backwards jump to code a known distance from the stack pointer.
The server does not correctly handle the amount of data or bytes of the USERNAME entered by the user.
When authenticating to the FTP server with a long USERNAME or a USERNAME with a large number of characters for the server to process, the server will crash as soon as it is received and processed, causing denial of service conditions.
Successful exploitation of these issues allows remote attackers to crash the affected server, denying service to legitimate users.
References:
Vídeo: https://www.youtube.com/watch?v=wwHuXfYS8yQ |
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| Source | ⚠️ https://packetstormsecurity.com/files/176714/Gabriels-FTP-Server-1.2-Denial-Of-Service.html |
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| User | fernando.mengali (UID 60856) |
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| Submission | 01/25/2024 16:29 (2 years ago) |
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| Moderation | 01/29/2024 11:15 (4 days later) |
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| Status | Accepted |
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| VulDB entry | 252287 [Gabriels FTP Server 1.2 Username denial of service] |
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| Points | 20 |
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