| Title | 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 "ASCII" 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. |
|---|
| Source | ⚠️ https://fitoxs.com/exploit/exploit-03c7c0ace395d80182db07ae2c30f034.txt |
|---|
| User | Fernando Mengali (UID 83791) |
|---|
| Submission | 04/17/2025 17:52 (1 Year ago) |
|---|
| Moderation | 04/30/2025 20:30 (13 days later) |
|---|
| Status | Accepted |
|---|
| VulDB entry | 306694 [PCMan FTP Server up to 2.0.7 ASCII Command buffer overflow] |
|---|
| Points | 20 |
|---|