stb_vorbis is a single file MIT licensed library for processing ogg vorbis files. A crafted file may trigger out of bounds write in `f->vendor[len] = (char)'\0';`. The root cause is that if the len read in `start_decoder` is `-1` and `len + 1` becomes 0 when passed to `setup_malloc`. The `setup_malloc` behaves differently when `f->alloc.alloc_buffer` is pre-allocated. Instead of returning `NULL` as in `malloc` case it shifts the pre-allocated buffer by zero and returns the currently available memory block. This issue may lead to code execution.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2023-10-20T23:26:45.989Z

Updated: 2024-09-12T13:40:37.887Z

Reserved: 2023-10-10T14:36:40.861Z

Link: CVE-2023-45675

cve-icon Vulnrichment

Updated: 2024-08-02T20:21:16.836Z

cve-icon NVD

Status : Modified

Published: 2023-10-21T00:15:09.207

Modified: 2023-11-04T06:15:53.630

Link: CVE-2023-45675

cve-icon Redhat

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