This question presents a fictitious security vulnerability in a range of lasers printers. The question requires that you develop SNORT IDS rules to detect exploits of this fictitious vulnerability. All information regarding this vulnerability is fabricated to give the illusion of a real security threat. As a result, searches on the Internet will not yield any information regarding the signature of this vulnerability. All the information required to detect exploits for this vulnerability are presented in this question, except where noted otherwise.
You are a security specialist working for XYZ Incorporated. XYZ use SNORT as their NIDS which protects both their IP sub-networks being 192.168.1.0/24 and 192.168.2.0/24.
A security vulnerability has been detected in the Humphrey Pollard Laserprint 12050 printer model. This vulnerability is remotely exploitable and allows the execution of arbitrary code.
There is a bug in the way the printer processes the postscript spool management header. A sample of a spool header is given below:
The printer’s code which parses these headers only allows 8 bytes for the “%%For” field value buffer in memory. In the example above, the field value is “username”. It is possible to overflow