Vulnerability in tesseract-ocr tesseract

[ Why it matters ]Priority signals

• Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official description

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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/tesseract-ocr/tesseract/commit/614e971036d2b95d521057ff63d68d6612429b23
• github.com/tesseract-ocr/tesseract/pull/4645
• github.com/tesseract-ocr/tesseract/releases/tag/5.5.4
• github.com/tesseract-ocr/tesseract/security/advisories/GHSA-357f-833m-3f83