Tesseract is an open source OCR engine. Prior to 5.5.4, GENERIC_2D_ARRAY::DeSerializeSize in src/ccstruct/matrix.h reads matrix dimensions as signed int32_t values and compares them only with UINT16_MAX, allowing negative values to reach ResizeNoInit. Negative dimensions or a 65535 by 65535 product can create inconsistent allocation state and later out-of-bounds accesses while loading a crafted traineddata file, causing 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-6xhq-wvww-6…
https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-6xhq-wvww-6xfg
https://github.com/tesseract-ocr/tesseract/pull/4649
https://github.com/tesseract-ocr/tesseract/pull/4649
https://github.com/tesseract-ocr/tesseract/commit/048e92378f1a34dcdaf94bc515c75…
https://github.com/tesseract-ocr/tesseract/commit/048e92378f1a34dcdaf94bc515c7552ac01f08ef
https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.4
https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.4