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 pngdoquantize 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.
{
"binaries": [
{
"binary_name": "libpng16-16",
"binary_version": "1.6.20-2ubuntu0.1~esm2"
},
{
"binary_name": "libpng16-devtools",
"binary_version": "1.6.20-2ubuntu0.1~esm2"
},
{
"binary_name": "libpng16-tools",
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}
],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}