Would be great if you push it into a separate branch, so we don't have to manually apply every change you do. In your current tree run:
$ git checkout -b exploitcheck # this will create the branch $ git push origin exploitcheck # this will push it to the server
others can just:
$ git clone .. && git checkout exploitcheck
Whenever you do some changes others will just git pull instead of the annoying mail saving&applying ...
Thanks, Jirka
On 06/13/2013 02:01 PM, Denys Vlasenko wrote:
This is an RFC, please do not commit.
Usage: Run abrt-action-analyze-vulnerability in a directory which contains ./coredump file. If crash looks exploitable, the tool creates ./exploitable file. Example such a file:
""" Likely crash reason: Write to an invalid address Exploitable rating (0-9 scale): 6 """
This patch adds abrt-action-analyze-vulnerability invocation to "EVENT=post-create analyzer=CCpp".
TODO:
- improve error detection (e.g. what to do if gdb failed to run?)
- suppress stray gdb output
- set $SIGNO_OF_THE_COREDUMP to work around non-working $_siginfo.si_signo
- decide whether to push for $_signo support in gdb (I have a tested gdb patch)
- instruction analyzer is x86 specific now, make it per-arch (how to get arch name???)
v2: improved instruction analyzer, added more exploibable cases to detect, added tests
Signed-off-by: Denys Vlasenko dvlasenk@redhat.com
abrt.spec.in | 2 + src/plugins/Makefile.am | 10 +- src/plugins/abrt-action-analyze-vulnerability | 9 + src/plugins/abrt-gdb-exploitable | 502 +++++++++++++++++++++ src/plugins/ccpp_event.conf | 5 +- tests/abrt-exploitable/.gitignore | 10 + tests/abrt-exploitable/Makefile | 67 +++ tests/abrt-exploitable/testDivideByZero.c | 10 + tests/abrt-exploitable/testExecuteInvalid.c | 17 + .../abrt-exploitable/testFloatingPointException.c | 10 + tests/abrt-exploitable/testReadNull.c | 12 + tests/abrt-exploitable/testReadRandom.c | 14 + tests/abrt-exploitable/testSignalAbort.c | 10 + tests/abrt-exploitable/testSignalIll.c | 10 + tests/abrt-exploitable/testStackBufferOverflow.c | 23 + tests/abrt-exploitable/testStackRecursion.c | 15 + tests/abrt-exploitable/testWriteRandom.c | 15 + 17 files changed, 738 insertions(+), 3 deletions(-) create mode 100755 src/plugins/abrt-action-analyze-vulnerability create mode 100755 src/plugins/abrt-gdb-exploitable create mode 100644 tests/abrt-exploitable/.gitignore create mode 100644 tests/abrt-exploitable/Makefile create mode 100644 tests/abrt-exploitable/testDivideByZero.c create mode 100644 tests/abrt-exploitable/testExecuteInvalid.c create mode 100644 tests/abrt-exploitable/testFloatingPointException.c create mode 100644 tests/abrt-exploitable/testReadNull.c create mode 100644 tests/abrt-exploitable/testReadRandom.c create mode 100644 tests/abrt-exploitable/testSignalAbort.c create mode 100644 tests/abrt-exploitable/testSignalIll.c create mode 100644 tests/abrt-exploitable/testStackBufferOverflow.c create mode 100644 tests/abrt-exploitable/testStackRecursion.c create mode 100644 tests/abrt-exploitable/testWriteRandom.c
diff --git a/abrt.spec.in b/abrt.spec.in index fec5b56..ce5f944 100644 --- a/abrt.spec.in +++ b/abrt.spec.in @@ -670,6 +670,7 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || : %{_initrddir}/abrt-ccpp %endif %{_libexecdir}/abrt-hook-ccpp +%{_libexecdir}/abrt-gdb-exploitable
# attr(6755) ~= SETUID|SETGID %attr(6755, abrt, abrt) %{_libexecdir}/abrt-action-install-debuginfo-to-abrt-cache @@ -677,6 +678,7 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || : %{_bindir}/abrt-action-analyze-c %{_bindir}/abrt-action-trim-files %{_bindir}/abrt-action-analyze-core +%{_bindir}/abrt-action-analyze-vulnerability %{_bindir}/abrt-action-install-debuginfo %{_bindir}/abrt-action-generate-backtrace %{_bindir}/abrt-action-generate-core-backtrace diff --git a/src/plugins/Makefile.am b/src/plugins/Makefile.am index 767c045..20e0297 100644 --- a/src/plugins/Makefile.am +++ b/src/plugins/Makefile.am @@ -3,6 +3,7 @@ bin_SCRIPTS = \ abrt-action-install-debuginfo \ abrt-action-analyze-core \
- abrt-action-analyze-vulnerability \ abrt-action-analyze-vmcore \ abrt-action-list-dsos \ abrt-action-perform-ccpp-analysis \
@@ -29,9 +30,12 @@ bin_PROGRAMS += \ abrt-bodhi endif
-libexec_PROGRAMS = abrt-action-install-debuginfo-to-abrt-cache +libexec_PROGRAMS = \
- abrt-action-install-debuginfo-to-abrt-cache
-libexec_SCRIPTS = abrt-action-ureport +libexec_SCRIPTS = \
abrt-action-ureport \
abrt-gdb-exploitable
#dist_pluginsconf_DATA = Python.conf
@@ -68,6 +72,7 @@ PYTHON_FILES = \ abrt-action-install-debuginfo.in \ abrt-action-list-dsos \ abrt-action-analyze-core \
- abrt-action-analyze-vulnerability \ abrt-action-analyze-vmcore.in \ abrt-action-perform-ccpp-analysis.in
@@ -84,6 +89,7 @@ EXTRA_DIST = \ abrt-action-analyze-vmcore \ abrt-action-save-kernel-data \ abrt-action-ureport \
- abrt-gdb-exploitable \ https-utils.h \ post_report.xml.in \ abrt-action-analyze-ccpp-local
diff --git a/src/plugins/abrt-action-analyze-vulnerability b/src/plugins/abrt-action-analyze-vulnerability new file mode 100755 index 0000000..f2a410e --- /dev/null +++ b/src/plugins/abrt-action-analyze-vulnerability @@ -0,0 +1,9 @@ +#!/bin/sh
+if type gdb >/dev/null 2>&1; then
- # gdb is avaliable
- gdb --batch \
-ex 'python execfile("/usr/libexec/abrt-gdb-exploitable")' \
-ex 'core-file ./coredump' \
-ex 'abrt-exploitable 5 ./exploitable'
+fi diff --git a/src/plugins/abrt-gdb-exploitable b/src/plugins/abrt-gdb-exploitable new file mode 100755 index 0000000..4f73e0b --- /dev/null +++ b/src/plugins/abrt-gdb-exploitable @@ -0,0 +1,502 @@ +#!/usr/bin/python +# This is a GDB plugin. +# Usage: +# gdb --batch -ex 'python execfile("THIS_FILE")' -ex run -ex abrt-exploitable PROG +# or +# gdb --batch -ex 'python execfile("THIS_FILE")' -ex 'core COREDUMP' -ex abrt-exploitable
+import gdb +import os +import signal
+_writing_instr = {
- # insn:N, where N:
- # -1: this insn always writes to memory
- # -2: writes to memory if any operand is a memory operand
- # 2: writes to memory if 2nd (or later) operand is a memory operand
- #
- # Two-operand insns
- "add":2,
- "adc":2,
- "sub":2,
- "sbb":2,
- "and":2,
- "xor":2,
- "or":2,
- "xadd":2,
- "cmpxchg":2,
- # One-operand insns. Can use 1 or -2
- "inc":-2,
- "dec":-2,
- "neg":-2,
- "not":-2,
- "pop":-2,
- # "Set byte on condition". One-operand insns.
- "seta":-2,
- "setae":-2,
- "setb":-2,
- "setbe":-2,
- "setc":-2,
- "sete":-2,
- "setg":-2,
- "setge":-2,
- "setl":-2,
- "setle":-2,
- "setna":-2,
- "setnae":-2,
- "setnb":-2,
- "setnbe":-2,
- "setnc":-2,
- "setne":-2,
- "setng":-2,
- "setnge":-2,
- "setnl":-2,
- "setnle":-2,
- "setno":-2,
- "setnp":-2,
- "setns":-2,
- "setnz":-2,
- "seto":-2,
- "setp":-2,
- "setpe":-2,
- "setpo":-2,
- "sets":-2,
- "setz":-2,
- # Shifts.
- # sarl $2,(%rcx)
- # sarl (%rax) - *implicit* operand (shift count) 1.
- # shld 11,%ecx,(%rdi) - *third* operand is r/m.
- # Luckily, any memory operand is a destination, can use -2.
- "shl":-2,
- "shr":-2,
- "sal":-2,
- "sar":-2,
- "rol":-2,
- "ror":-2,
- "rcl":-2,
- "rcr":-2,
- "shld":-2,
- "shrd":-2,
- # Bit tests. Any memory operand is a destination, can use -2.
- "bts":-2,
- "btr":-2,
- "btc":-2,
- # One-operand (register pair is another, implicit operand).
- "cmpxchg8b":-2,
- "cmpxchg16b":-2,
- # Either mem operand indicates write to mem.
- "xchg":-2,
- # String store insns.
- # Look similar to widening signed move "movs[bwl][wlq]",
- # but aliasing doesn't happen since widening move has two siffixes
- "movs":-1,
- "stos":-1,
- # Widening moves never store to mem.
- # May look like we need to list them because otherwise they get caught
- # by "movXXX", but thankfully their 2nd operand is never a memory reference,
- # which "movXXX" wildcard checks.
- #"mov[sz][bwl][wlq]":0,
- # One-operand insn.
- # These are system insns, but they do NOT cause exception in userspace.
- "smsw":-2,
- "sgdt":-2,
- "sidt":-2,
- "sldt":-2,
- "str":-2,
- # FPU/SIMD madness follows.
- # FPU store insns. One-operand.
- "fsts":-2,
- "fstl":-2,
- #"fstt" doesn't exist
- "fstps":-2,
- "fstpl":-2,
- "fstpt":-2,
- # Saving state. One-operand insns.
- "fstcw":-2,
- "fnstcw":-2,
- "fstsw":-2,
- "fnstsw":-2,
- "fstenv":-2,
- "fnstenv":-2,
- "fsave":-2,
- "fnsave":-2,
- "fxsave":-2,
- "xsave":-2,
- "xsaveopt":-2,
- "fsave64":-2,
- "fnsave64":-2,
- "fxsave64":-2,
- "xsave64":-2,
- "xsaveopt64":-2,
- "stmxcsr":-2,
- "vstmxcsr":-2,
- # SIMD store insns.
- # Three-operand insns. Any memory operand is a destination.
- "vcvtps2ph":-2,
- "extractps":-2,
- "vextractps":-2,
- #[v]extractpd does not exist
- "vextractf128":-2,
- "vextracti128":-2,
- "pextr":-2, # covers pextr[bwq]
- "pextrd":-2,
- "vpextr":-2,
- "vpextrd":-2,
- "vmaskmovpd":-2,
- "vmaskmovps":-2,
- "vpmaskmovd":-2,
- "vpmaskmovq":-2,
- # These insns have implicit (%edi) dest operand:
- "maskmovq":-1, # mmx version
- "maskmovdqu":-1,
- "vmaskmovdqu":-1,
- # check binutils/gas/testsuite/gas/i386/* for more weird insns
- # Instruction Set Reference, A-M and N-Z:
- # http://download.intel.com/products/processor/manual/253666.pdf
- # http://download.intel.com/products/processor/manual/253667.pdf
- # SSE4:
- # http://software.intel.com/sites/default/files/m/0/3/c/d/4/18187-d9156103.pdf
- # Instruction Set Extensions:
- # http://download-software.intel.com/sites/default/files/319433-014.pdf
- # Xeon Phi:
- # http://download-software.intel.com/sites/default/files/forum/278102/32736400...
- #"vmovXXX" - special-cased in the code
- "mov":2
- # Note: stack-writing instructions are omitted
+}
+_pushing_instr = {
- "push":-1,
- "pusha":-1,
- "pushf":-1,
- "enter":-1,
- "call":-1,
- "lcall":-1
+}
+_intdiv_instr = {
- "div":-1,
- "idiv":-1
+}
+_jumping_instr = {
- "jmp":-1, # indirect jumps/calls with garbage data
- "call":-1, # call: also possible that stack is exhausted (infinite recursion)
- "ljmp":-1,
- "lcall":-1,
- # Yes, lret/iret isn't used in normal userspace code,
- # but it does work (compile with "gcc -nostartfiles -nostdlib -m32"):
- #
- #_start: .globl _start
- # pushf
- # push %cs
- # push $next
- # iret # lret or ret would work too
- #next:
- # movl $42, %ebx
- # movl $1, %eax
- # int $0x80 # exit(42)
- #
- "iret":-1,
- "lret":-1,
- "ret":-1
+}
+_return_instr = {
- "iret":-1,
- "lret":-1,
- "ret":-1 # stack smashed if we crash on this
+}
+def _fetch_insn_from_table(ins, table):
- if not ins:
return None
- if ins in table.keys():
return table[ins]
- # Drop common byte/word/long/quad suffix and try again
- if ins[-1] in ("b", "w", "l", "q"):
ins = ins[:-1]
if ins in table.keys():
return table[ins]
- return None
+def _instruction_is_writing(self):
- operand = _fetch_insn_from_table(self.mnemonic, _writing_instr)
- if not operand:
if not self.mnemonic:
return False
# There are far too many SSE store instructions,
# don't want to pollute the table with them.
# Special-case the check for MOVxxx
# and its SIMD cousins VMOVxxx:
if self.mnemonic[:3] != "mov" and self.mnemonic[:4] != "vmov":
return False
operand = 2
- if operand == -1: # no need to check operands, it's a write
return True
- # Memory operands look like this: [%seg:][[-]0xHEXNUM][(%reg[,...])]
- # Careful with immediate operands which are $0xHEXNUM
- # and FPU register references which are st(N).
- if self.operands.startswith("0x") or self.operands.startswith("-0x") or self.operands.startswith("("):
mem_op_pos = 0
- else:
mem_op_pos = self.operands.find(",0x")
if mem_op_pos < 0:
mem_op_pos = self.operands.find(",-0x")
if mem_op_pos < 0:
mem_op_pos = self.operands.find(":0x")
if mem_op_pos < 0:
mem_op_pos = self.operands.find(":-0x")
if mem_op_pos < 0:
mem_op_pos = self.operands.find(",(")
if mem_op_pos < 0:
mem_op_pos = self.operands.find(":(")
if mem_op_pos < 0:
return False # no memory operands
mem_op_pos += 1
- if operand == -2: # any mem operand indicates write
return True
- comma = self.operands.find(",")
- if mem_op_pos < comma:
# "%cs:0x0(%rax,%rax,1),foo" - 1st operand is memory
# "%cs:0x0(%rax),foo" - 1st operand is memory
memory_operand = 1
- elif comma < 0:
# "%cs:0x0(%rax)" - 1st operand is memory
memory_operand = 1
- else:
# mem_op_pos is after comma
# "foo,%cs:0x0(%rax,%rax,1)" - 2nd operand is memory
# (It also can be a third, fourth etc operand)
memory_operand = 2
- if operand == memory_operand:
return True
- return False
+def _instruction_is_pushing(self):
- if _fetch_insn_from_table(self.mnemonic, _pushing_instr):
return True
- return False
+def _instruction_is_division(self):
- if _fetch_insn_from_table(self.mnemonic, _intdiv_instr):
return True
- return False
+def _instruction_is_jumping(self):
- if _fetch_insn_from_table(self.mnemonic, _jumping_instr):
return True
- return False
+def _instruction_is_return(self):
- if _fetch_insn_from_table(self.mnemonic, _return_instr):
return True
- return False
+class _Signal_and_Insn:
- pass
+def _get_signal_and_instruction():
- si = _Signal_and_Insn()
- si.signo = None
- try:
sig = gdb.parse_and_eval("$_signo") # ("$_siginfo.si_signo")
# type(sig) = <type 'gdb.Value'>
# sig is 8 (for SIGFPE)
si.signo = int(sig)
- except gdb.error:
# Python Exception <class 'gdb.error'> Attempt to extract a component of a value that is not a structure.:
# Possible reasons why $_siginfo doesn't exist:
# program is still running, program exited normally,
# we work with a coredump from an old kernel.
#
# HACK_ALERT: kernels before 3.?.? do not record siginfo in coredumps,
# so $_siginfo isn't present.
# Lets see whether we are running from the abrt and it provided us with signal number
#
try:
si.signo = int(os.environ["SIGNO_OF_THE_COREDUMP"])
except KeyError:
return None
- si.current_instruction = None
- si.mnemonic = None
- si.operands = ""
- try:
# just "disassemble $pc" won't work if $pc doesn't point
# inside a known function
instructions = gdb.execute("disassemble $pc,$pc+32", to_string=True)
# type(instructions) = <type 'str'>
- except gdb.error:
# For example, if tracee already exited normally.
# Another observed case is if $pc points to unmapped area.
# Python Exception <class 'gdb.error'> No registers.:
return si
- raw_instructions = instructions
- #print instructions
- instructions = []
- current = None
- for line in raw_instructions.split("\n"):
# line can be:
# "Dump of assembler code from 0xAAAA to 0xBBBB:"
# "[=>] 0x00000000004004dc[ <+0>]: push %rbp"
# (" <+0>" part is present when we run on a live process,
# on coredump it is absent)
# "End of assembler dump."
# "" (empty line)
if line.startswith("=>"):
line = line[2:]
current = len(instructions)
line = line.split(":", 1)
if len(line) < 2: # no ":"?
continue
line = line[1] # drop "foo:"
line = line.strip() # drop leading/trailing whitespace
if line:
instructions.append(line)
- if current == None:
# not False! we determined that $pc points to a bad address,
# which is an interesting fact.
return si
- si.current_instruction = instructions[current]
- # TODO: too simplistic.
- # consider this example:
- # "data32 data32 data32 nopw %cs:0x0(%rax,%rax,1)"
- t = si.current_instruction.split(None,2)
- si.mnemonic = t[0]
- if len(t) > 1:
si.operands = t[1]
- return si
+#Our initial set of testing will use the list Apple included in their +#CrashWrangler announcement: +# +#Exploitable if: +# Crash on write instruction +# Crash executing invalid address +# Crash calling an invalid address +# Crash accessing an uninitialized or freed pointer as indicated by +# using the MallocScribble environment variable +# Illegal instruction exception +# Abort due to -fstack-protector, _FORTIFY_SOURCE, heap corruption +# detected +# Stack trace of crashing thread contains certain functions such as +# malloc, free, szone_error, objc_MsgSend, etc.
+def _is_exploitable(self):
- self.exploitable_rating = 3
- self.exploitable_desc = ""
- if 0:
pass
- # SIGABRT Abort signal from abort(3)
- # SIGQUIT Quit from keyboard
- # SIGXCPU CPU time limit exceeded
- # SIGXFSZ File size limit exceeded
- # SIGTRAP Trace/breakpoint trap
- # SIGSYS Bad argument to routine (SVr4)
- # SIGFPE Floating point exception
- # SIGILL Illegal Instruction
- # SIGSEGV Invalid memory reference
- # SIGBUS Bus error (bad memory access)
- elif self.signo == signal.SIGABRT:
self.exploitable_rating = 0
self.exploitable_desc = "ABRT signal (abort() was called?)"
- elif self.signo == signal.SIGQUIT:
self.exploitable_rating = 0
self.exploitable_desc = "QUIT signal (Ctrl-\ pressed?)"
- elif self.signo == signal.SIGXCPU:
self.exploitable_rating = 0
self.exploitable_desc = "XCPU signal (over CPU time limit)"
- elif self.signo == signal.SIGXFSZ:
self.exploitable_rating = 0
self.exploitable_desc = "XFSZ signal (over file size limit)"
- elif self.signo == signal.SIGTRAP:
self.exploitable_rating = 0
self.exploitable_desc = "TRAP signal (can be a bug in a debugger/tracer)"
- elif self.signo == signal.SIGSYS:
self.exploitable_rating = 1
self.exploitable_desc = "SYS signal (unknown/masked syscall was called?)"
- elif self.signo == signal.SIGFPE:
self.exploitable_rating = 1
self.exploitable_desc = "Arithmetic exception occurred"
if _instruction_is_division(self):
self.exploitable_rating = 0
self.exploitable_desc = "Division by zero occurred"
- elif self.signo == signal.SIGILL:
self.exploitable_rating = 5
self.exploitable_desc = "Illegal instruction (jump to a random address?)"
- # TODO: check that sig is SIGSEGV/SIGBUS?
- elif _instruction_is_pushing(self):
self.exploitable_rating = 4
self.exploitable_desc = "Stack overflow"
- elif _instruction_is_writing(self):
self.exploitable_rating = 6
self.exploitable_desc = "Write to an invalid address"
- elif _instruction_is_return(self):
self.exploitable_rating = 7
self.exploitable_desc = "Subroutine return to an invalid address (corrupted stack?)"
- # Note: we check "ret" first, _then_ jumps.
- # Corrupted stack is different from corrupted data.
- elif _instruction_is_jumping(self):
self.exploitable_rating = 6
self.exploitable_desc = "Jump to an invalid address"
- elif not self.current_instruction:
self.exploitable_rating = 6
self.exploitable_desc = "Jump to an invalid address"
- elif self.signo == signal.SIGBUS:
self.exploitable_rating = 5
self.exploitable_desc = "Access past the end of mapped file, invalid address, unaligned access, etc"
- #elif self.signo = signal.SIGfoo:
+class AbrtExploitable(gdb.Command):
- "Analyze a crash to determine exploitability"
- def __init__(self):
super(AbrtExploitable, self).__init__(
"abrt-exploitable",
gdb.COMMAND_SUPPORT, # command class
gdb.COMPLETE_NONE, # completion method
False # => it's not a prefix command
)
- # Called when the command is invoked from GDB
- def invoke(self, args, from_tty):
si = _get_signal_and_instruction()
#print "w", _instruction_is_writing(self)
f = sys.stdout
min_rating = 0
if args:
args = args.split(None, 1)
min_rating = int(args[0])
if len(args) > 1:
f = open(args[1], 'w')
if not si:
sys.stderr.write("Can't get signal no and do exploitability analysis\n")
return
_is_exploitable(si)
if si.exploitable_desc:
if si.exploitable_rating >= min_rating:
f.write("Likely crash reason: " + si.exploitable_desc + "\n")
f.write("Exploitable rating (0-9 scale): " + str(si.exploitable_rating) + "\n")
else:
sys.stderr.write("Exploitability analysis on this crash came up empty\n")
+AbrtExploitable() diff --git a/src/plugins/ccpp_event.conf b/src/plugins/ccpp_event.conf index dfc4908..aa8cdb3 100644 --- a/src/plugins/ccpp_event.conf +++ b/src/plugins/ccpp_event.conf @@ -15,10 +15,13 @@ EVENT=post-create analyzer=CCpp exit 1 fi # Try generating backtrace, if it fails we can still use
# the UUID generated by abrt-action-analyze-c
# the hash generated by abrt-action-analyze-c ##satyr migration: #satyr abrt-create-core-stacktrace "$DUMP_DIR" abrt-action-generate-core-backtrace
# Run GDB plugin to see if crash looks exploitable
abrt-action-analyze-vulnerability
# Generate hash abrt-action-analyze-c && abrt-action-list-dsos -m maps -o dso_list && (
diff --git a/tests/abrt-exploitable/.gitignore b/tests/abrt-exploitable/.gitignore new file mode 100644 index 0000000..b0c3b29 --- /dev/null +++ b/tests/abrt-exploitable/.gitignore @@ -0,0 +1,10 @@ +testDivideByZero +testExecuteInvalid +testFloatingPointException +testReadNull +testReadRandom +testSignalAbort +testSignalIll +testStackBufferOverflow +testStackRecursion +testWriteRandom diff --git a/tests/abrt-exploitable/Makefile b/tests/abrt-exploitable/Makefile new file mode 100644 index 0000000..fe4078d --- /dev/null +++ b/tests/abrt-exploitable/Makefile @@ -0,0 +1,67 @@ +# Copyright (C) 2010, 2011 Red Hat, Inc. +# +# This file is part of ABRT. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see http://www.gnu.org/licenses/.
+CFLAGS=-g
+TESTS=\
- testDivideByZero\
- testReadNull\
- testStackRecursion\
- testReadRandom\
- testSignalAbort\
- testSignalIll\
- testWriteRandom\
- testExecuteInvalid\
- testStackBufferOverflow\
- testFloatingPointException\
+all: $(TESTS)
+clean:
- rm -f $(TESTS)
+testlive:
- for t in $(TESTS); do \
echo "====="; \
echo "Test: $$t"; \
gdb --batch \
-ex 'python execfile("../../src/plugins/abrt-gdb-exploitable")' \
-ex 'run' \
-ex 'disas $$pc-16,$$pc+16' \
-ex 'abrt-exploitable' \
-ex 'cont' \
-ex 'quit' \
./$$t; \
- done 2>&1 | tee testlive.log
+testcore:
- rm ./core* 2>/dev/null; \
- ulimit -c unlimited; \
- for t in $(TESTS); do \
echo "====="; \
echo "Test: $$t"; \
./$$t && { echo "No crash???"; continue; }; \
mv core* core || { echo "No corefile???"; continue; }; \
gdb --batch \
-ex 'python execfile("../../src/plugins/abrt-gdb-exploitable")' \
-ex 'core ./core' \
-ex 'disas $$pc-16,$$pc+16' \
-ex 'abrt-exploitable' \
-ex 'quit' \
; \
rm ./core; \
- done 2>&1 | tee testcore.log
diff --git a/tests/abrt-exploitable/testDivideByZero.c b/tests/abrt-exploitable/testDivideByZero.c new file mode 100644 index 0000000..06d1551 --- /dev/null +++ b/tests/abrt-exploitable/testDivideByZero.c @@ -0,0 +1,10 @@ +/*
- Test a divide by zero error
- This error is not exploitable
- */
+#include <stdio.h>
+int main(int argc, char *argv[]) {
- printf("%d\n", 7/0);
+} diff --git a/tests/abrt-exploitable/testExecuteInvalid.c b/tests/abrt-exploitable/testExecuteInvalid.c new file mode 100644 index 0000000..86ce515 --- /dev/null +++ b/tests/abrt-exploitable/testExecuteInvalid.c @@ -0,0 +1,17 @@ +/*
- Test a crash attempting to execute an invalid address
- This error is exploitable
- */
+#include <stdlib.h> +#include <string.h>
+int (*function_pointer)();
+int main(int argc, char *argv[]) {
- char *a;
- a = malloc(1024);
- a = (size_t)a * 1024; // This should put us well outside the valid memory range
- function_pointer = a;
- function_pointer();
+} diff --git a/tests/abrt-exploitable/testFloatingPointException.c b/tests/abrt-exploitable/testFloatingPointException.c new file mode 100644 index 0000000..53e8762 --- /dev/null +++ b/tests/abrt-exploitable/testFloatingPointException.c @@ -0,0 +1,10 @@ +/*
- Test the illegal instruction signal
- This error is exploitable
- */
+#include <signal.h>
+int main(int argc, char *argv[]) {
- raise(SIGFPE);
+} diff --git a/tests/abrt-exploitable/testReadNull.c b/tests/abrt-exploitable/testReadNull.c new file mode 100644 index 0000000..548cf73 --- /dev/null +++ b/tests/abrt-exploitable/testReadNull.c @@ -0,0 +1,12 @@ +/*
- Test a NULL read
- This error is not exploitable
- */
+#include <stdio.h>
+int main(int argc, char *argv[]) {
- char *a;
- a = 0x0;
- puts(a);
+} diff --git a/tests/abrt-exploitable/testReadRandom.c b/tests/abrt-exploitable/testReadRandom.c new file mode 100644 index 0000000..8493078 --- /dev/null +++ b/tests/abrt-exploitable/testReadRandom.c @@ -0,0 +1,14 @@ +/*
- Test a crash attempting to read invalid memory
- This error is not exploitable
- */
+#include <stdio.h> +#include <stdlib.h>
+int main(int argc, char *argv[]) {
- char *a;
- a = malloc(1024);
- a = (size_t)a * 1024; // This should put us well outside the valid memory range
- printf("%s\n", a);
+} diff --git a/tests/abrt-exploitable/testSignalAbort.c b/tests/abrt-exploitable/testSignalAbort.c new file mode 100644 index 0000000..fc41227 --- /dev/null +++ b/tests/abrt-exploitable/testSignalAbort.c @@ -0,0 +1,10 @@ +/*
- Test the abort signal
- This error is not exploitable
- */
+#include <signal.h>
+int main(int argc, char *argv[]) {
- raise(SIGABRT);
+} diff --git a/tests/abrt-exploitable/testSignalIll.c b/tests/abrt-exploitable/testSignalIll.c new file mode 100644 index 0000000..7783263 --- /dev/null +++ b/tests/abrt-exploitable/testSignalIll.c @@ -0,0 +1,10 @@ +/*
- Test the illegal instruction signal
- This error is exploitable
- */
+#include <signal.h>
+int main(int argc, char *argv[]) {
- raise(SIGILL);
+} diff --git a/tests/abrt-exploitable/testStackBufferOverflow.c b/tests/abrt-exploitable/testStackBufferOverflow.c new file mode 100644 index 0000000..fcbd95f --- /dev/null +++ b/tests/abrt-exploitable/testStackBufferOverflow.c @@ -0,0 +1,23 @@ +/*
- Test a stack buffer overflow
- This test could be exploitable (it needs further analysis)
- */
+#include <stdio.h>
+int i;
+int my_function() {
- char a[2];
- for (i = 0; i < 1024; i++) {
a[i] = 'A';
- }
- printf("%s\n", a);
+}
+int main(int argc, char *argv[]) {
- my_function();
- my_function();
- return 0;
+} diff --git a/tests/abrt-exploitable/testStackRecursion.c b/tests/abrt-exploitable/testStackRecursion.c new file mode 100644 index 0000000..dddf583 --- /dev/null +++ b/tests/abrt-exploitable/testStackRecursion.c @@ -0,0 +1,15 @@ +/*
- Test a crash from stack recursion
- This error is not exploitable
- */
+#include <stdio.h>
+void my_function() {
- char a[1024];
- my_function();
+}
+int main(int argc, char *argv[]) {
- my_function();
+} diff --git a/tests/abrt-exploitable/testWriteRandom.c b/tests/abrt-exploitable/testWriteRandom.c new file mode 100644 index 0000000..812f94c --- /dev/null +++ b/tests/abrt-exploitable/testWriteRandom.c @@ -0,0 +1,15 @@ +/*
- Test a crash attempting to write invalid memory
- This error is exploitable
- */
+#include <stdlib.h> +#include <string.h>
+int main(int argc, char *argv[]) {
- char *a;
- char b[] = "pwnt";
- a = malloc(1024);
- a = (size_t)a * 1024; // This should put us well outside the valid memory range
- strcpy(a, b);
+}