PT-2026-65778 · Gnu · Bison
CVSS v4.0
6.8
Medium
| Vector | AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Name of the Vulnerable Software and Affected Versions
GNU Bison version 3.8.2
Description
GNU Bison improperly handles grammar-defined output paths. Grammar directives such as
%output and %header allow specifying file paths that 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, which could lead to the overwriting of existing files accessible to the Bison process.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Bison