UBUNTU-CVE-2023-45675

Dashboard / Vulnerabilities / UBUNTU-CVE-2023-45675

UBUNTU-CVE-2023-45675

Summary:

Details: 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.

References: https://ubuntu.com/security/CVE-2023-45675, https://securitylab.github.com/advisories/GHSL-2023-145_GHSL-2023-151_stb_image_h/, https://github.com/nothings/stb/pull/1553, https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_vorbis.c#L3652-L3658, https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_vorbis.c#L3658, https://securitylab.github.com/advisories/GHSL-2023-145_GHSL-2023-151_stb_image_h/, https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_vorbis.c#L950-L960, https://www.cve.org/CVERecord?id=CVE-2023-45675