Short Name |
DOS:NETDEV:HP-LCD-MOD-9100 |
---|---|
Severity |
Minor |
Recommended |
No |
Category |
DOS |
Keywords |
HP JetDirect LCD Modification (TCP/9100) |
Release Date |
2003/04/22 |
Update Number |
1213 |
Supported Platforms |
idp-4.0+, isg-3.0+, j-series-9.5+, mx-11.4+, srx-12.1+, srx-branch-12.1+, vmx-17.4+, vsrx-12.1+, vsrx3bsd-18.2+ |
This signature detects attempts to exploit a vulnerability in the printer control language used in HP JetDirect printers. Attackers can send maliciously crafted packets to TCP/9100 to print arbitrary messages on HP printers with LCD panels.
Certain versions of HP JetDirect enabled printers provide a function (PJL command) that changes the LCD display on a printer over TCP/IP. Arbitrary strings can be sent to the LCD display by a remote user using this command. This represents more of a nuisance than a threat, although it is conceivable that the ability to modify the display could be used in some sort of "social engineering" scheme.