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[bison 3.7.1.1] heap-buffer-overflow in symbol_translation src/symtab.c:


From: 송수환
Subject: [bison 3.7.1.1] heap-buffer-overflow in symbol_translation src/symtab.c:768
Date: Mon, 3 Aug 2020 12:17:38 +0900

Hi, This is from Agency for Defense Development (ADD).

We found a heap-buffer-overflow in symbol_translation src/symtab.c:768.

We attached the poc file and the asan log.

To reproduce the bug
1) Compile the bison with address sanitizer
2) run the bision ($ bison $PoC)

version: bison (GNU Bison) 3.7.1.1-cb7dc-dirty

Thanks,

Attachment: bug_report.txt
Description: Text document

Attachment: poc
Description: Binary data


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