Tesseract: Heap out-of-bounds write in LSTM::Forward via na_/gate-matrix dimension mismatch
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| tesseract-ocr | tesseract | affected |
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No data.
| Vendor | Product | Versions | ||||||||
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| Tesseract Project | Tesseract |
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| Source | ID | Title |
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Ubuntu USN |
USN-8882-1 | Tesseract vulnerabilities |
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.150% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Tesseract-ocr
Tesseract-ocr tesseract Ocr |
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| CPEs | cpe:2.3:a:tesseract-ocr:tesseract_ocr:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Tesseract-ocr
Tesseract-ocr tesseract Ocr |
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| Metrics |
cvssV3_1
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cvssV3_1
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Tesseract Project
Tesseract Project tesseract |
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| Vendors & Products |
Tesseract Project
Tesseract Project tesseract |
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| References |
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| Metrics |
threat_severity
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cvssV3_1
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| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
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| Description | Tesseract is an open source OCR engine. In version 5.5.3 and earlier, prior .traineddata hardening added bounds checks to NetworkIO::CopyTimeStepGeneral and NetworkIO::Randomize in src/lstm/networkio.cpp but left NetworkIO::WriteTimeStepPart and NetworkIO::AddTimeStepPart unchecked. In LSTM::Forward in src/lstm/lstm.cpp, source_ is sized from the independently deserialized na_ field while the WriteTimeStepPart count is ns_, which comes from the CI gate WeightMatrix dim1() value. A crafted NT_LSTM layer can make ns_ much larger than na_, causing a heap out-of-bounds write during the first recognition step on the default LSTM engine and resulting in heap corruption, a crash, or potentially controlled corruption. No fixed release is available as of this review. | |
| Title | Tesseract: Heap out-of-bounds write in LSTM::Forward via na_/gate-matrix dimension mismatch | |
| Weaknesses | CWE-787 | |
| References |
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| Metrics |
cvssV4_0
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