Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| pnggroup / libpng | affected >= 1.6.0, < 1.6.51 |
CWE
CWE-125
References
- https://github.com/pnggroup/libpng/security/advisories/GHSA-hfc7-ph9c-wcww
- https://github.com/pnggroup/libpng/issues/686
- https://github.com/pnggroup/libpng/pull/751
- https://github.com/pnggroup/libpng/commit/08da33b4c88cfcd36e5a706558a8d7e0e4773643
ADP enrichment
No English description supplied.