CyberRota Analysis
AI-GeneratedVersions of Data::Intern::Shared prior to 0.02 for Perl are vulnerable to an out-of-bounds read due to insufficient validation of indices in the si_idx_find function, which can lead to disclosure of adjacent process memory. This critical vulnerability allows a local attacker with write access to the backing file to manipulate slot IDs and offsets, potentially exposing sensitive data. Organizations using affected versions should prioritize patching to mitigate the risk of data leakage.
Original NVD Description
Data::Intern::Shared versions before 0.02 for Perl allow an out-of-bounds read via unvalidated slot, reverse and arena indices in si_idx_find. The attach-time validator si_validate_header is thorough about the header and layout (magic, version, section offsets, total_size, count and arena_used) but does not validate the three arrays it then trusts. Every lookup in si_idx_find walks a triple indirection read straight from the mmap'd segment, arena[reverse[slots[i].id]], with no bound on slots[i].id against count, on the reverse[id] arena offset against arena_used, or on the arena record's length prefix. A local peer that can write the backing file can leave the header valid while poisoning a slot id, a reverse offset or an arena length prefix, so an id_of, intern or string lookup dereferences the chain out of bounds; because string() returns a file-controlled length of bytes from the arena, adjacent process memory can be disclosed.