Description (CNA)
The H5Z__nbit_decompress_one_byte, H5Z__nbit_decompress_one_nooptype, and H5Z__nbit_decompress_one_atomic functions in H5Znbit.c in HDF5 prior to 2.3.0 advance a read index into the compressed chunk buffer without bounding it against the buffer's actual size. This allows attackers to cause an out-of-bounds heap read, and in constrained cases disclosure of adjacent heap memory into decompressed dataset values, via a crafted HDF5 file whose N-Bit filter parameters describe more decompressed data than the stored compressed chunk actually contains, triggered via H5Dread, e.g. by the h5ls or h5repack tools.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| The HDF Group / HDF5 | affected <=2.3.0 |
CWE
CWE-125
References
- https://github.com/HDFGroup/hdf5/pull/6497
- https://github.com/HDFGroup/hdf5/issues/6489
- https://github.com/HDFGroup/hdf5/issues/6492
ADP enrichment
No English description supplied.