Tesseract is an open source OCR engine. Prior to 5.5.4, ReadAdaptedClass in src/classify/adaptive.cpp raw-reads an ADAPT_CLASS_STRUCT from a pre-adapted-template .a file without neutralizing TempProtos and Config pointer fields before any destructor path. When the legacy engine is selected, classify_use_pre_adapted_templates is enabled, and an attacker can write the output-basename .a file, the success or rejection path can pass file-controlled pointers to ~ADAPT_CLASS_STRUCT and operator delete, causing memory corruption and denial of service.
This issue is fixed in version 5.5.4.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://github.com/tesseract-ocr/tesseract/commit/614e971036d2b95d521057ff63d68…
security-advisories@github.com
https://github.com/tesseract-ocr/tesseract/pull/4645
security-advisories@github.com
https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.4
security-advisories@github.com
https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-357f-833m-3…
security-advisories@github.com