NULL pointer dereference in stb_vorbis.c - CVE-2023-45680
Published: October 26, 2023 / Updated: January 3, 2025
Vulnerability identifier: #VU102294
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-45680
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
stb_vorbis is a single file MIT licensed library for processing ogg vorbis files. A crafted file may trigger memory allocation failure in `start_decoder`. In that case the function returns early, the `f->comment_list` is set to `NULL`, but `f->comment_list_length` is not reset. Later in `vorbis_deinit` it tries to dereference the `NULL` pointer. This issue may lead to denial of service.
Affected software
stb_vorbis.c
Fedora
SDL2_sound
libxmp
Fedora
SDL2_sound
libxmp
How to mitigate CVE-2023-45680
Install update from vendor's website.
SDL2_sound - addressed in versions 2.0.4-1.fc40, 2.0.4-1.fc41
libxmp - addressed in versions 4.6.1-2.fc40, 4.6.1-2.fc41
libxmp - addressed in versions 4.6.1-2.fc40, 4.6.1-2.fc41