Double Free in Nothings Stb
CVE-2023-45664
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.
Vulnerability class: Double Free
EPSS: 0.009 (55.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Nothings Stb — versions <= 2.28
- Nothings Stb_image.h — versions 2.28
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com
- security-advisories@github.com
- security-advisories@github.com
Frequently asked questions
- What is CVE-2023-45664?
- CVE-2023-45664 is a high-severity vulnerability in Nothings Stb, classified under Double Free. CVSS score: 7.3/10. Published 2023-10-21.
- How severe is CVE-2023-45664?
- High severity. CVSS v3 base score is 7.3 out of 10.
- Is CVE-2023-45664 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.