Description officielle (NVD)
CFITSIO through 4.7.0 contains a heap-based out-of-bounds read vulnerability in the imcompress.c unquantize helpers that allows attackers to read memory before the fits_rand_value table via a zero or negative ZDITHER0 seed. Attackers can supply a crafted FITS file with a SUBTRACTIVE_DITHER_1 compressed image, read through fits_open_file() and fits_read_pix(), to cause crashes or leak heap contents in decoded pixels.
Références
- https://github.com/HEASARC/cfitsio — Product
- https://github.com/HEASARC/cfitsio/blob/d6d27653740864a0483e74cff23c53e34e1dceee/imcompress.c#L5353-L5362 — Product
- https://github.com/HEASARC/cfitsio/blob/d6d27653740864a0483e74cff23c53e34e1dceee/imcompress.c#L7495-L7516 — Product
- https://hackmd.io/@haind-pwn/cfitsio-zdither0-dither-seed-oob-read — Exploit, Mitigation, Vendor Advisory
- https://www.vulncheck.com/advisories/cfitsio-through-4.7.0-heap-out-of-bounds-read-via-negative-zdither0-seed — Third Party Advisory
En bref
| Éditeur | nasa |
| Produit | cfitsio |
| Publiée le | 15/10/2026 |
| Modifiée le | 20/10/2026 |
| CVSS | 6.9 (v4.0) |
| EPSS | 0,17 % (centile 6) |
| CWE | CWE-125 |
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS : probabilité estimée d'exploitation dans les 30 prochains jours.
Produits concernés
nasa · cfitsio
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