Tesseract is an open source OCR engine. Prior to 5.5.4, WeightMatrix::DeSerialize trusts a mode byte from a traineddata LSTM network and calls WeightMatrix::DeSerializeOld when kDoubleFlag is clear. In default FAST_FLOAT builds, DeSerializeOld invokes ASSERT_HOST instead of returning an error, so loading a crafted model through TessBaseAPI::Init terminates the process and causes denial of service.
This issue is fixed in version 5.5.4.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products
tesseract-ocr:tesseract
References 4
https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-h9g4-frjx-6…
https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-h9g4-frjx-6cj3
https://github.com/tesseract-ocr/tesseract/pull/4657
https://github.com/tesseract-ocr/tesseract/pull/4657
https://github.com/tesseract-ocr/tesseract/commit/c053424327352b9d5180aa7540c1f…
https://github.com/tesseract-ocr/tesseract/commit/c053424327352b9d5180aa7540c1f9e67c64f27e
https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.4
https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.4