Description (CNA)
Imager::File::GIF versions through 1.002 for Perl allow a heap out of bounds (OOB) write on crafted multi-frame GIF files. Imager::File::GIF's i_readgif_multi_low allocates a single per-row buffer GifRow sized for the GIF's global screen width 'SWidth' and reuses it across every image in the file. The page-match branch validates Image.Width + Image.Left > SWidth before each DGifGetLine write, but the parallel skip-image branch at imgif.c:790-805 calls DGifGetLine(GifFile, GifRow, Width) with no such check.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| TONYC / Imager::File::GIF | affected 0 through 1.002 |
CWE
CWE-787
References
- https://metacpan.org/release/TONYC/Imager-File-GIF-1.003/source/Changes
- https://github.com/tonycoz/imager/commit/782e9c06cc75a0f7eed383f39522f51f44598b04.patch
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.