CVE-2020-21677: Buffer Overflow
First published: Tue Aug 10 2021(Updated: )
A heap-based buffer overflow in the sixel_encoder_output_without_macro function in encoder.c of Libsixel 1.8.4 allows attackers to cause a denial of service (DOS) via converting a crafted PNG file into Sixel format.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Libsixel Project Libsixel | =1.8.4 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID of this heap-based buffer overflow?
The vulnerability ID is CVE-2020-21677.
What is the title of this vulnerability?
The title of this vulnerability is 'A heap-based buffer overflow in the sixel_encoder_output_without_macro function in encoder.c of Libsixel 1.8.4'.
What is the affected software?
The affected software is Libsixel 1.8.4.
What is the severity of this vulnerability?
The severity of this vulnerability is medium with a CVSS score of 6.5.
How can attackers exploit this vulnerability?
Attackers can exploit this vulnerability by converting a crafted PNG file into Sixel format.
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