CyberRota Analysis
AI-GeneratedVersions of Data::ReqRep::Shared prior to 0.05 for Perl are vulnerable to an out-of-bounds read due to improper validation of offsets and lengths in the reqrep_recv_locked function. This flaw allows a local attacker with write access to the backing file to manipulate memory, potentially leading to information disclosure or process crashes. Organizations using affected versions should prioritize patching this vulnerability to mitigate the risk of exploitation.
Original NVD Description
Data::ReqRep::Shared versions before 0.05 for Perl allow an out-of-bounds read via an unvalidated arena offset and length in reqrep_recv_locked. The attach-time validator reqrep_validate_header checks the header scalars and region layout against the file size, but does not validate the array contents it then trusts. reqrep_recv_locked does memcpy(copy_buf, req_arena + arena_off, len) with arena_off and len read raw from the mmap'd segment and never bounded against the arena capacity (req_arena_cap). A local peer that can write the backing file can leave the header valid while poisoning a request slot's offset and length, so receiving the request copies a file-controlled offset and length out of the arena, reading adjacent memory or crashing the process.