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https://github.com/libjpeg-turbo/libjpeg-turbo.git
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739d1ae1bc
- Modify the existing fuzzers to extend default coverage to the
following code paths:
* ICC profile writing/reading, basic marker processing
* NULL color conversion with 3 or 4 components
* Huffman encoding with a destination buffer size < 512 bytes
* Partial image decompression
This was previously untouched by default because
2a5a3c6f0a was overly strict. Some
images will fail to decompress on the first iteration due to a
mismatch between the JPEG colorspace and the destination pixel
format. Thus, this commit modifies the decompression fuzzers to
detect whether the error thrown by tj3Decompress*() is due to an
excessive number of scans and bails out only in that case.
* Generating baseline-compatible quantization tables with low JPEG
quality levels
* 1/8 and 1/4 scaled IDCTs
- Add a new libjpeg-based decompression fuzzer that exercises code
paths not covered by the other fuzzers (or by the TurboJPEG API in
general):
* JCS_UNKNOWN (NULL color conversion with a component count other
than 3 or 4)
* Floating point IDCT
* Buffered-image mode
* Interstitial line skipping
* jpeg_save_markers() with a length limit
* Custom marker processor
Based on
5593bb138b
- Fall back to directly injecting fuzz data into the compressor if
tj3LoadImage*() fails. This prevents the packed-pixel image loaders
from acting as gatekeepers and thus preventing some fuzz data from
getting through to the codec.
Based on:
5593bb138b
- Add a JPEG dictionary to guide the decompression fuzzers.
Based on:
5593bb138b
- Remove duplication of effort in the cjpeg fuzzer.
Closes #845
74 lines
2.7 KiB
C++
74 lines
2.7 KiB
C++
/*
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* Copyright (C)2021, 2024, 2026 D. R. Commander. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of the libjpeg-turbo Project nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/* This fuzz target wraps cjpeg in order to test esoteric compression options
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as well as the GIF and Targa readers. */
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#define CJPEG_FUZZER
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extern "C" {
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#include "../src/cjpeg.c"
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}
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#include <stdint.h>
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#include <unistd.h>
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
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{
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char *argv1[] = {
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(char *)"cjpeg", (char *)"-dct", (char *)"float", (char *)"-memdst",
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(char *)"-quality", (char *)"100,99,98",
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(char *)"-sample", (char *)"4x1,2x2,1x2", (char *)"-targa"
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};
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char *argv2[] = {
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(char *)"cjpeg", (char *)"-dct", (char *)"float", (char *)"-memdst",
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(char *)"-quality", (char *)"90,80,70", (char *)"-smooth", (char *)"50",
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(char *)"-targa"
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};
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FILE *file = NULL;
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if ((file = fmemopen((void *)data, size, "r")) == NULL)
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goto bailout;
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fseek(file, 0, SEEK_SET);
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cjpeg_fuzzer(9, argv1, file);
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fseek(file, 0, SEEK_SET);
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cjpeg_fuzzer(9, argv2, file);
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argv1[8] = argv2[8] = NULL;
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fseek(file, 0, SEEK_SET);
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cjpeg_fuzzer(8, argv1, file);
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fseek(file, 0, SEEK_SET);
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cjpeg_fuzzer(8, argv2, file);
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bailout:
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if (file) fclose(file);
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return 0;
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}
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