CVE-2019-20056 Denial of service in n/a
An assertion failure in the stb image loader allows attackers to cause a denial of service via crafted image files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2019-20056?
CVE-2019-20056 is a medium-severity denial of service vulnerability in n/a, published on 29 Dec 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
stb_image.h (aka the stb image loader) 2.23, as used in libsixel and other products, has an assertion failure in stbi__shiftsigned.
Weakness: CWE-617
Which versions are affected by CVE-2019-20056?
It affects 1 product.
Products include Nothings Stb Image.h.
How do I fix CVE-2019-20056?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-20056 being exploited?
There is no known exploitation of CVE-2019-20056 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2019-19777 Memory corruption in n/a
- CVE-2023-45664 Double-free in stbi__load_gif_main_outofmem in stb_image
- CVE-2023-45666 Possible double-free or memory leak in stbi__load_gif_main in stb_image
- CVE-2023-43281 Use after free in n/a
- CVE-2023-45661 Wild address read in stbi__gif_load_next in stb_image
Sources
Also known as DEBIAN-CVE-2019-20056, GHSA-f76f-ffcv-7fmm, UBUNTU-CVE-2019-20056.