CVE-2021-42203: Use After Free
First published: Tue May 31 2022(Updated: )
An issue was discovered in swftools through 20201222. A heap-use-after-free exists in the function swf_FontExtract_DefineTextCallback() located in swftext.c. It allows an attacker to cause code execution.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| SWFTools | <=2020-12-22 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-42203?
CVE-2021-42203 has been classified as having critical severity due to its potential for remote code execution.
How do I fix CVE-2021-42203?
To mitigate CVE-2021-42203, upgrade SWFTools to a version released after 2020-12-22.
Which versions of SWFTools are affected by CVE-2021-42203?
SWFTools versions up to and including 2020-12-22 are affected by CVE-2021-42203.
What type of vulnerability is CVE-2021-42203?
CVE-2021-42203 is a heap-use-after-free vulnerability.
What could an attacker achieve with CVE-2021-42203?
An attacker could exploit CVE-2021-42203 to execute arbitrary code on an affected system.
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