php imagecreatefrom* functions of the png-vulnerability warning-the black bar safety net

0x00 introduction This article mainly analyzes the php using the GD library imagecreatefrompng function to rebuild the png image may lead to local file inclusion vulnerability. When the system is the existence of the file contains the points, can contain a picture file; in addition the system the...

GD Graphics Library Heap Overflow Proof of Concept Exploit

No description provided by source. include stdio.h include sys/types.h include netinet/in.h include fcntl.h include string.h include unistd.h include stdlib.h include stdint.h include zlib.h define OUTFILE "britnaysparespr0n.png" define BS 0x1000 define ALIGN 0 define diex do perrorx;...

GD Graphics Library - Local Heap Overflow

include include include include include include include include include define OUTFILE "britnaysparespr0n.png" define BS 0x1000 define ALIGN 0 define diex do perrorx; exitEXITFAILURE;while0 / a chunk looks like: 4 byte len - just the length of data 4 byte id - identifies chunk data type 0+ data -...