Vulnerability Information
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Vulnerability Title
LIBPNG is vulnerable to a buffer overflow in `png_image_read_composite` via incorrect palette premultiplication
Vulnerability Description
LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, an out-of-bounds read vulnerability exists in png_image_read_composite when processing palette images with PNG_FLAG_OPTIMIZE_ALPHA enabled. The palette compositing code in png_init_read_transformations incorrectly applies background compositing during premultiplication, violating the invariant component ≤ alpha × 257 required by the simplified PNG API. This issue has been patched in version 1.6.51.
CVSS Information
CVSS:3.1/AV:N/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 1.6.0版本至1.6.51之前版本存在缓冲区错误漏洞，该漏洞源于png_image_read_composite函数处理调色板图像时存在越界读取，可能导致违反PNG API规范。
CVSS Information
N/A
Vulnerability Type
N/A