| Titre | PCMan FTP Server 2.0.7 Buffer Overflow |
|---|
| Description | This technique works well against Windows XP Professional Service Pack 2 and 3.
For this exploit, I tried several strategies to increase the reliability of the Poc - Proof Of Concept.
Sending an excessive amount of data through the "RNFR" command, the application crashes, indicating the Buffer Overflow condition.
Then, the offset amount was identified by using msf-pattern_create -l 3000
And then by using msf-pattern_offset -q to discover the offset amount.
After discovering the offset amount, it was necessary to adjust the data in the stack.
To advance in the exploit , mona was used, together with the command !mona jmp -r esp -n to discover a JMP ESP address, in this case it was 0x74e32fd9.
Then I used the removal of the main badchars: 0x00\0x0a\0x0d I did not perform a search for badchars through bytearray, because I already knew the environment I was working in.
Finally, I added 20 nops and generated the shellcode with msfvenom
Successful exploitation of these issues could allow attackers to obtain a remote shell on the system. |
|---|
| La source | ⚠️ https://fitoxs.com/exploit/exploit-aab361888e671e1705f94c27c26f9bc7c9c63d3c66d5df89e31dcaf7fa17f528.txt |
|---|
| Utilisateur | Fernando Mengali (UID 83791) |
|---|
| Soumission | 17/04/2025 23:19 (il y a 12 mois) |
|---|
| Modérer | 05/05/2025 13:56 (18 days later) |
|---|
| Statut | Accepté |
|---|
| Entrée VulDB | 307395 [PCMan FTP Server 2.0.7 RNFR Command buffer overflow] |
|---|
| Points | 20 |
|---|