Description (CNA)
Tesseract is an open source OCR engine. In version 5.5.3 and earlier, Plumbing::DeSerialize in src/lstm/plumbing.cpp rejects excessively large network stacks but accepts a zero-length stack for NT_SERIES, NT_PARALLEL, or NT_REVERSED layers in a crafted .traineddata model. During LSTMRecognizer initialization in src/lstm/lstmrecognizer.cpp, CacheXScaleFactor(XScaleFactor()) reaches Series::CacheXScaleFactor in src/lstm/series.cpp, which dereferences stack_[0] on the empty vector and invokes a virtual method through an invalid Network pointer. This causes a deterministic crash and denial of service at model load. No fixed release is available as of this review.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| tesseract-ocr / tesseract | affected <= 5.5.3 |
CWE
CWE-125, CWE-824
References
- https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-f6h7-cqr4-6fx4
- https://github.com/tesseract-ocr/tesseract/commit/552771236b0d80cbdb0c7dd856120fa21a4672e5
ADP enrichment
No English description supplied.