In-Reply-To: <20041214173439.24838.qmail (at) www.securityfocus (dot) com [email concealed]>

Sorry, I forgot something. The below is the correct description.

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If it receives a icmp packet that:

1. icmp total length is bigger than 28(8 header + 20 data)

2. icmp[0] == 3 (or 4, 11 , 12. other value?)

3. (icmp[9] & 0x05) < 5 -- (ip header length < 5?)

4. icmp[17] == 17 or 6(other value?) -- (protocol field in ip header?)

then it reboots.

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>

> RICOH Aficio 450/455 PCL 5e Printer ICMP DOS vulnerability

>

>AUTHOR:

>(Fortinet, inc)

>Hongzhen Zhou<felix__zhou _at_ hotmail _dot_ com>

>

>DATE:

>14/12/2004

>

>PRODUCTS:

>RICOH Aficio 450/455 PCL 5e Printer(SAVIN 9945 DPE/2045 DPE)

>Other RICOH Aficio products (or Toshiba printer products?)may be vulnerable

>

>DETAILS:

>RICOH Aficio 450/455 PCL does not conduct some kinds of ICMP

>packet properly.

>If it receives a icmp packet that:

>1. icmp total length is bigger than 28(8 header + 20 data)

>2. icmp[0] == 3 (or 4, 11 , 12. other value?)

>3. icmp[17] == 17 or 6(other value?) -- (protocol field in ip header?)

>then it reboots.

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