libjxl vulnerabilities

In libjxl before 0.12, an integer underflow vulnerability exists in the container box parser that allows remote attackers to inject arbitrary metadata by exploiting 64-bit box size truncation to size_t on 32-bit platforms. Attackers can supply a crafted JPEG XL file causing the decoder to parse attacker-controlled codestream bytes as phantom box headers, enabling injection of arbitrary metadata (Exif, XMP, IPTC, JUMBF) and potential out-of-bounds reads.

Buffer overflow vulnerability in libjxl library version 0.11.2 and earlier in the DecodeImageAPNG function. A local attacker can exploit this to obtain sensitive information.

A specially crafted file can cause libjxl's decoder to write pixel data to uninitialized unallocated memory, and then data from another uninitialized region is copied to pixel data. This occurs during color transformation of grayscale images to another grayscale color space when using the LCMS2 CMS engine.

An issue was discovered in libjxl before version 0.8.2 in dec_patch_dictionary.cc. An integer underflow in patch decoding can lead to a denial of service, such as an infinite loop.

An out-of-bounds read vulnerability exists in libjxl. An attacker can cause an out-of-bounds read in the EXIF handler by using a specially crafted file.