CVE-2021-42199 Memory corruption in n/a
A heap buffer overflow in swftools allows attackers to execute arbitrary code via malicious SWF files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-42199?
CVE-2021-42199 is a high-severity memory corruption vulnerability in Swftools Swftools, published on 31 May 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
An issue was discovered in swftools through 20201222. A heap buffer overflow exists in the function swf_FontExtract_DefineTextCallback() located in swftext.c. It allows an attacker to cause code execution.
Weakness: CWE-787
Which versions are affected by CVE-2021-42199?
It affects 1 product.
Products include Swftools Swftools.
How do I fix CVE-2021-42199?
No fix has been published for CVE-2021-42199 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-42199 being exploited?
There is no known exploitation of CVE-2021-42199 in the wild and no public exploit code.
Other vulnerabilities in Swftools Swftools
Sources
Also known as GHSA-x42h-ccw6-7grm, UBUNTU-CVE-2021-42199.