User`s guide

ZyWALL IDP 10 User’s Guide
57 Chapter 6 IDP Policies
Figure 30 Scan Signatures
6.3.6 Buffer Overflow
A buffer overflow occurs when a program or process tries to store more data in a buffer
(temporary data storage area) than it was intended to hold. The excess information can
overflow into adjacent buffers, corrupting or overwriting the valid data held in them.
Intruders could run codes in the overflow buffer region to obtain control of the system, install
a backdoor or use the victim to launch attacks on other devices.
To find a list of all buffer overflow related signatures supported by the ZyWALL, do a policy
search by name or policy query by type (Buffer Overflow). The following screen shows some
of the buffer overflow related signatures supported by the ZyWALL at the time of writing.