An out-of-bounds read vulnerability exists in the `DecodeLookupTable` function within `DicomImageDecoder.cpp`. The lookup-table decoding logic used for `PALETTE COLOR` images does not validate pixel indices against the lookup table size. Crafted images containing indices larger than the palette size cause the decoder to read beyond allocated lookup table memory and expose heap contents in the output image.
| Vendor | Product | Versions |
|---|---|---|
| Orthanc | DICOM Server | 0, 1.12.10 |
Updated affected versions to include 1.12.10, changed severity to HIGH, and noted that the vulnerability is actively exploited.
Initial creation
