TI-2023-24480 Aliases CVE-2023-45681

Out of bounds heap buffer write in stb_vorbis

HIGH 69CWE-787Published 2023-10-20 · Updated 2025-02-13

Key facts

Attack vector: Local
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

stb_vorbis is a single file MIT licensed library for processing ogg vorbis files. A crafted file may trigger memory write past an allocated heap buffer in `start_decoder`. The root cause is a potential integer overflow in `sizeof(char*) * (f->comment_list_length)` which may make `setup_malloc` allocate less memory than required. Since there is another integer overflow an attacker may overflow it too to force `setup_malloc` to return 0 and make the exploit more reliable. This issue may lead to code execution.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00512 43rd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
nothings	stb	up to 1.22	—	No fix listed	CNA

stb Vendornothings Affected up to 1.22 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:nothings:stb_vorbis.c:1.22:::::::*	1.22	Vulnerable	nothings

cpe:2.3:a:nothings:stb_vorbis.c:1.22:*:*:*:*:*:*:* Versions 1.22 Vulnerable ·nothings

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-45681

References

Advisory 2

Other 3

TI-2023-25531 Integer overflow in stb_vorbis.c CVSS 3.1CRITICAL 9.8
TI-2023-24478 Attempt to free an uninitialized memory pointer in vorbis_deinit in stb_vorbis CVSS 3.1HIGH 7.8
TI-2023-24477 Off-by-one heap buffer write in start_decoder in stb_vorbis CVSS 3.1HIGH 7.8
TI-2023-24476 Heap buffer out of bounds write in start_decoder in stb_vorbis CVSS 3.1HIGH 7.8
TI-2023-24475 Multi-byte write heap buffer overflow in start_decoder in stb_vorbis CVSS 3.1HIGH 7.8
TI-2023-24474 0 byte write heap buffer overflow in start_decoder in stb_vorbis CVSS 3.1HIGH 7.8

See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences