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kandi X-RAY | fuzzing Summary
kandi X-RAY | fuzzing Summary
This project aims at hosting tutorials, examples, discussions, research proposals, and other resources related to fuzzing. External contributions are welcome, please see CONTRIBUTING file for more info.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of fuzzing
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fuzzing Examples and Code Snippets
def TestOneInput(input_bytes):
"""Test randomized integer fuzzing input for v1 vs v2 APIs."""
fh = FuzzingHelper(input_bytes)
# Comparing tf.math.angle with tf.compat.v1.angle.
input_supported_dtypes = [tf.float32, tf.float64]
random_dtype
def TestOneInput(input_bytes):
"""Test randomized integer fuzzing input for tf.raw_ops.SparseCountSparseOutput."""
fh = FuzzingHelper(input_bytes)
shape1 = fh.get_int_list(min_length=0, max_length=8, min_int=0, max_int=8)
shape2 = fh.get_int
def TestOneInput(input_bytes):
"""Test randomized integer fuzzing input for tf.raw_ops.DataFormatVecPermute."""
fh = FuzzingHelper(input_bytes)
dtype = fh.get_tf_dtype()
# Max shape can be 8 in length and randomized from 0-8 without running
Community Discussions
Trending Discussions on fuzzing
QUESTION
go 1.18 has released serveral days ago.It supports fuzzing in its standard toolchain beginning in Go 1.18
but while i'm trying to write my cases , it can not run multi cases in one package(or one file?). code:
...ANSWER
Answered 2022-Mar-24 at 03:05all right,I've read the source of Go-fuzz module, it's a fact that it not support multi cases for each execution.
code in :\Go\src\testing\fuzz.go
QUESTION
I'm learning my way around fuzz testing C applications. As I understand it, most of the time when fuzzing, one has a C function that takes/reads files. The fuzzer is given a valid sample file, mutates it randomly or with coverage heuristics, and executes the function with this new input.
But now I don't want to fuzz a function that takes file inputs but a few functions that together make up an API. For example:
...ANSWER
Answered 2022-Feb-24 at 20:29To answer my own question:
Yes, that's how API fuzzing can be done.
For consuming the data bytewise the functions provided by libFuzzer #include
(C++) could be used. Problem with this: The crash dump and fuzzer corpus won't be human readable.
For a more readable fuzzer, implementing a structure aware custom data mutator for libFuzzer is beneficial.
I used the premade data mutator libprotobuf-mutator (C++) to fuzz the example API. It generates valid input data based on a protocol buffer definition and not just (semi) random bytes. It does make the fuzzing a bit slower though. The bug in the given contrived example API was found after ~2min, compared to ~30secs with the basic byte consuming setup. But I do think that it would scale much better for larger (real) API's.
QUESTION
In RSpec I would use the following to obtain a Random
which is seeded from the test order random seed. This would give us a reproducible RNG for things like fuzzing:
ANSWER
Answered 2022-Jan-24 at 16:11You can use the --seed parameter when calling minitest or the SEED environment variable, [source code](https://github.com/seattlerb/minitest/blob/fe3992e85b40792cf7bff2a876887d8d9e392068/lib/minitest.rb#L190
QUESTION
I do not understand how symbolic execution is different from Whitebox fuzzing? From what I understand, Whitebox Fuzzers symbolically execute the code with some initial input format. Additionally, it will be helpful if someone could differentiate between these two forms with reference to KLEE and AFL tools.
...ANSWER
Answered 2021-Nov-08 at 16:13Whitebox fuzzing can be done not only with symbolic execution. SAGE from Microsoft Research is an example of a whitebox fuzzer that uses concolic execution, also called dynamic symbolic execution, see NDSS08.
Yes, Whitebox Fuzzers get some seed/seeds (initial input/inputs) and symbolically execute the code with these. Concolic fuzzers also run the code with these inputs in parallel with symbolic execution.
KLEE is a whitebox fuzzer that uses symbolic execution.
AFL is a greybox fuzzer - it uses internal structure information only to calculate coverage and not to get new paths. There are tools for AFL that get constants from comparisions in the code and add these to AFLs dictionaries, but this is still not whitebox fuzzing.
QUESTION
I am working on some library code that will be used in a bigger project/workspace. I can run the unit tests for my code when is not within the bigger project's sub directory. However, when I try and put my code into the larger project and build it, it will fail.
I've tried cleaning, adding my code's path to 'members' in the workspace's cargo.toml and reading:
https://doc.rust-lang.org/cargo/reference/overriding-dependencies.html
https://doc.rust-lang.org/cargo/reference/resolver.html
My code's cargo.toml (Note: problem still exists w/o tokio and hex):
...ANSWER
Answered 2021-Jun-29 at 08:13The syn
crate made a breaking change in version 1.0.58
, when it renamed a module that was not meant to be used by other crates. The enum_dispatch
crate was one that erroneously was using this module and thus was broken but later fixed in version 0.3.5
(see the relevant issue).
I don't know where exactly in your dependency tree syn
and enum_dispatch
sit, but I recommend updating enum_dispatch
to a newer version.
QUESTION
anybody here? I have been working on using afl-qemu mode fuzzing IoT binaries. But I got a "Fork server handshake failed" problem when started to run the binary. I have read the previous related session but none of those fix my problem.
The information of the binary is here:
...ANSWER
Answered 2021-Feb-09 at 11:42You've tried to upgrade the version of QEMU that afl-qemu uses. Because afl-qemu makes modifications to QEMU's source, this is not a trivial thing to do. In particular, these commands that you commented out:
QUESTION
I'm using this code to practice BOF but can't get it to work. Any help is appreciated.
...ANSWER
Answered 2021-Feb-03 at 22:52This sounds like you're using an old version of python, specifically a version 3.5 or earlier.
What does python3 --version
say?
If possible, you should upgrade to a version of python 3.6 or higher, as python 3.5 is no longer supported.
If that isn't possible, don't use f-string syntax. Instead, you could do something like this:
QUESTION
I am currently working on fuzzing a program, and the code base is huge. To improve the performance, I am using persistent mode by creating a loop around the necessary function or code that reads from stdin. Right now using gdb, I am able to enumerate all the functions being used by the program like this:
...ANSWER
Answered 2020-Dec-08 at 02:27How would I be able to find the function that reads from stdin?
In general, your question is equivalent to the halting problem. Consider this function:
QUESTION
I'm struggling to understand this example from a PyCon talk (link to code example)
...ANSWER
Answered 2020-Nov-28 at 12:57All the threads run to completion. That's the point of the lesson. When multiple threads access the same variable simultaneously, you can get unexpected results.
I've modified the code slightly to print less distracting stuff and also a thread id. I think this should help clarify what is happening:
QUESTION
In C language, I have a piece of program like
...ANSWER
Answered 2020-Nov-22 at 12:36Lets say you read bytes (uint8_t) from a stream and want to pass the data to your function foo.
The steps to follow:
- are you sure you read serialized information of your datatype A?
- are you sure to have read at least sizeof(A) bytes?
- are you sure your type A is (trivially) serializable? (e.g. what if A contains a pointer to another object)
then
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