Buffer Overflow in GNU Chess 6.2.7 Leads to Remote Code Execution

CVE-2021-30184

Summary

GNU Chess 6.2.7 contains a vulnerability that allows attackers to execute arbitrary code through specially crafted Portable Game Notation (PGN) data. This issue arises from a buffer overflow linked to the use of a temporary file in the cmd_pgnload and cmd_pgnreplay functions of the application. As a result, an adversary could manipulate the game's input to gain unauthorized access and execute harmful commands on the affected system.

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