CyberRota Analysis
AI-GeneratedGNU Bison is vulnerable due to improper handling of grammar-defined output paths, allowing attackers to specify arbitrary writable locations for generated files, which can lead to overwriting critical files on the filesystem. Organizations using Bison, particularly those processing untrusted grammar inputs, should prioritize addressing this vulnerability to prevent potential data loss or system compromise. Users should update to the fixed version or apply mitigations as soon as possible, especially if they are using version 3.8.2 or earlier.
Original NVD Description
GNU Bison improperly handles grammar‑defined output paths. Grammar directives such as %output and %header allow specifying file paths, which are accepted without restriction and override caller‑supplied output options. When processing attacker-supplied grammar, this behavior allows directing generated files to arbitrary writable locations on the filesystem, potentially overwriting existing files accessible to the Bison process. Maintainers of this project were notified about this vulnerability, and fixed the issue in commit 8d101c19d4d9aaedf83a448c925513742d4efcf0. However, they did not provide vulnerable version range. Version 3.8.2 was tested and confirmed as vulnerable, other versions were not tested but might also be vulnerable.
Related CVEs
Other vulnerabilities affecting the same vendor(s)