Advanced Encryption Package - Buffer Overflow (Denial of Service) (PoC)

Dear List,

Greetings from vishnu (@dH4wk)

1. Vulnerable Product

   - Advanced Encryption Package
   - Company http://www.aeppro.com/

2. Vulnerability Information

 (A) Buffer OverFlow
     Impact: Attacker gains administrative access
     Remotely Exploitable: No
     Locally Exploitable: Yes


3. Vulnerability Description
     A 1006 byte causes the overflow. It is due to the inefficient/improper
handling of exception. This is an SEH based stack overflow and is
exploitable..

4. Reproduction:
     It can be reproduced by pasting 1006 "A"s or any characters in the
field where the key file is asked during encryption of "*TEXT TO ENCRYPT *"
tab..



*Windbg Output*
==============================================================
(a34.a38): Access violation - code c0000005 (first chance)
First chance exceptions are reported before any exception handling.
This exception may be expected and handled.
*** ERROR: Module load completed but symbols could not be loaded for
image00000000`00400000
image00000000_00400000+0x19c0:
004019c0 f00fc108        lock xadd dword ptr [eax],ecx
ds:002b:4141413d=????????

(a34.a38): Access violation - code c0000005 (first chance)
First chance exceptions are reported before any exception handling.
This exception may be expected and handled.
41414141 ??
==============================================================

Regards,
Vishnu Raju.