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Vulnerability · Published Oct 20, 2023 · Assigned by GitHub_M

CVE-2023-45676Multi-byte write heap buffer overflow in start_decoder in stb_vorbis

High 7.3

In plain English

A high-severity out-of-bounds write in stb from nothings. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).

Severity (CVSS 3.1)7.3High
Exploit odds (30 days)0.5%top 56.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

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[i] = get8_packet(f);`. The root cause is an integer overflow in `setup_malloc`. A sufficiently large value in the variable `sz` overflows with `sz+7` in and the negative value passes the maximum available memory buffer check. This issue may lead to code execution.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12libstbno fix listedDEBIAN-CVE-2023-45676
Debian:13libstbno fix listedDEBIAN-CVE-2023-45676
Debian:14libstbno fix listedDEBIAN-CVE-2023-45676
Ubuntu:22.04:LTSlibstbno fix listedUBUNTU-CVE-2023-45676
Ubuntu:24.04:LTSlibstbno fix listedUBUNTU-CVE-2023-45676
Ubuntu:25.10libstbno fix listedUBUNTU-CVE-2023-45676
Ubuntu:26.04:LTSlibstbno fix listedUBUNTU-CVE-2023-45676
Ubuntu:26.10libstbno fix listedUBUNTU-CVE-2023-45676

Affected products (as reported)

VendorProductVersions
nothings stb <= 1.22

Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

References