Icopack - A simple command line tool to create multi-frame ICO files from PNG source images

Related tags

Miscellaneous icopack
Overview

Optidash

Optidash is a modern, AI-powered image optimization and processing API.
We will drastically speed-up your websites and save you money on bandwidth and storage.

A command line tool to create multi-frame ICO files from PNG source images.

Intro

This tool simply creates a valid ICO header and "glues" together the PNG files provided. Any other types of images will be rejected. icopack is the most efficient way to create Favicons.

Background

The ICO file format allows either uncompressed or PNG compressed images. The PNG images are stored as-is inside the file and accessed through a simple file header plus frame index. The PNG files can be palette or full color, but must be no larger than 256x256.

Building

$ make

Usage

$ icopack output.ico icon-1.png icon-2.png icon-N.png

License

This software is distributed under the GNU General Public License, Version 3. See the LICENSE file for more information.

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Comments
  • heap over flow

    heap over flow

    enviroment

    ubuntu 18.04

    requirement

    compile with asan

    command

    ./icopack /dev/null poc

    poc

    https://drive.google.com/file/d/1Ow9CAwzZJNe4XF6-OdCWcMXrkGTLrsR-/view?usp=sharing

    output

    ================================================================= ==32885==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x602000000012 at pc 0x55dc91142975 bp 0x7ffcd75d0c20 sp 0x7ffcd75d0c10 READ of size 1 at 0x602000000012 thread T0 #0 0x55dc91142974 in get_png_info /home/fuzz/icopack/main.c:26 #1 0x55dc91142974 in main /home/fuzz/icopack/main.c:107 #2 0x7f2ca8152bf6 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21bf6) #3 0x55dc91142db9 in _start (/home/micro/all/found/icopack/icopack_asan+0x2db9)

    0x602000000012 is located 0 bytes to the right of 2-byte region [0x602000000010,0x602000000012) allocated by thread T0 here: #0 0x7f2ca8600b40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40) #1 0x55dc911417f8 in main /home/fuzz/icopack/main.c:101 #2 0x7ffcd75d0ff7 ()

    SUMMARY: AddressSanitizer: heap-buffer-overflow /home/fuzz/icopack/main.c:26 in get_png_info Shadow bytes around the buggy address: 0x0c047fff7fb0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c047fff7fc0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c047fff7fd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c047fff7fe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c047fff7ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 =>0x0c047fff8000: fa fa[02]fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c047fff8010: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c047fff8020: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c047fff8030: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c047fff8040: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c047fff8050: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa Shadow byte legend (one shadow byte represents 8 application bytes): Addressable: 00 Partially addressable: 01 02 03 04 05 06 07 Heap left redzone: fa Freed heap region: fd Stack left redzone: f1 Stack mid redzone: f2 Stack right redzone: f3 Stack after return: f5 Stack use after scope: f8 Global redzone: f9 Global init order: f6 Poisoned by user: f7 Container overflow: fc Array cookie: ac Intra object redzone: bb ASan internal: fe Left alloca redzone: ca Right alloca redzone: cb ==32885==ABORTING

    opened by rain6851 3
Owner
Optidash AI
AI-powered image optimization and processing API
Optidash AI
GitHub
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