漏洞信息
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Vulnerability Title
Tesseract: Out-of-bounds write in UnicharCompress via unvalidated recoder code values
Vulnerability Description
Tesseract is an open source OCR engine. In version 5.5.3 and earlier, RecodedCharID::DeSerialize in src/ccutil/unicharcompress.h validates length_ but accepts negative code_ values from a crafted .traineddata recoder component. UnicharCompress::ComputeCodeRange in src/ccutil/unicharcompress.cpp can consequently produce code_range_ equal to zero, after which SetupDecoder indexes is_valid_start_ with the negative code on a size-zero vector. The resulting out-of-bounds bit write uses a large wrapped index and reliably causes a wild-address crash or allocation failure on the default LSTM engine. No fixed release is available as of this review.
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Vulnerability Type
跨界内存写
Vulnerability Title
tesseract-ocr Tesseract 缓冲区错误漏洞
Vulnerability Description
tesseract-ocr Tesseract是tesseract-ocr组织的一款可将图像文字转换为可编辑文本的光学字符识别组件。 tesseract-ocr Tesseract 5.5.3及之前版本存在缓冲区错误漏洞,该漏洞源于RecodedCharID::DeSerialize验证length_时接受来自特制.traineddata recoder组件的负code_值,导致UnicharCompress::ComputeCodeRange产生为零的code_range_,进而SetupDecoder
CVSS Information
N/A
Vulnerability Type
N/A