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Vulnerability · Published Oct 20, 2023 · Assigned by GitHub_M

CVE-2023-45664Double-free in stbi__load_gif_main_outofmem in stb_image

High 7.3

In plain English

A high-severity double free in stb from nothings. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.3High
Exploit odds (30 days)0.9%top 39.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

stb_image is a single file MIT licensed library for processing images. A crafted image file can trigger `stbi__load_gif_main_outofmem` attempt to double-free the out variable. This happens in `stbi__load_gif_main` because when the `layers * stride` value is zero the behavior is implementation defined, but common that realloc frees the old memory and returns null pointer. Since it attempts to double-free the memory a few lines below the first “free”, the issue can be potentially exploited only in a multi-threaded environment. In the worst case this may lead to code execution.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20stb0_git20231012-r0ALPINE-CVE-2023-45664
Alpine:v3.21stb0_git20231012-r0ALPINE-CVE-2023-45664
Alpine:v3.22stb0_git20231012-r0ALPINE-CVE-2023-45664
Alpine:v3.23stb0_git20231012-r0ALPINE-CVE-2023-45664
Alpine:v3.24stb0_git20231012-r0ALPINE-CVE-2023-45664
Debian:12libstbno fix listedDEBIAN-CVE-2023-45664
Debian:13libstbno fix listedDEBIAN-CVE-2023-45664
Debian:14libstbno fix listedDEBIAN-CVE-2023-45664
Ubuntu:22.04:LTSlibstbno fix listedUBUNTU-CVE-2023-45664
Ubuntu:24.04:LTSlibstbno fix listedUBUNTU-CVE-2023-45664
Ubuntu:25.10libstbno fix listedUBUNTU-CVE-2023-45664
Ubuntu:26.04:LTSlibstbno fix listedUBUNTU-CVE-2023-45664
Ubuntu:26.10libstbno fix listedUBUNTU-CVE-2023-45664

Affected products (as reported)

VendorProductVersions
nothings stb <= 2.28

Weakness: CWE-415 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

References