Vulnerability Information
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Vulnerability Title
LIBPNG is vulnerable to a heap buffer overflow in `png_do_quantize` via malformed palette index
Vulnerability Description
LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to version 1.6.51, a heap buffer over-read vulnerability exists in libpng's png_do_quantize function when processing PNG files with malformed palette indices. The vulnerability occurs when palette_lookup array bounds are not validated against externally-supplied image data, allowing an attacker to craft a PNG file with out-of-range palette indices that trigger out-of-bounds memory access. This issue has been patched in version 1.6.51.
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Vulnerability Type
跨界内存读
Vulnerability Title
libpng 缓冲区错误漏洞
Vulnerability Description
libpng是The PNG Development Group开源的一个可对PNG图形文件实现创建、读写等操作的PNG参考库。 libpng 1.6.51之前版本存在缓冲区错误漏洞，该漏洞源于png_do_quantize函数处理畸形PNG文件时存在堆缓冲区越界读取，可能导致越界内存访问。
CVSS Information
N/A
Vulnerability Type
N/A