CVE-2020-21050: Buffer Overflow
First published: Tue Sep 14 2021(Updated: )
Libsixel prior to v1.8.3 contains a stack buffer overflow in the function gif_process_raster at fromgif.c.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Libsixel Project Libsixel | <1.8.3 |
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Reference Links
- https://bitbucket.org/netbsd/pkgsrc/commits/a27113e21179cbfbfae0c35f6a9edd6aa498faae
- https://cwe.mitre.org/data/definitions/121.html
- https://github.com/saitoha/libsixel/blob/master/ChangeLog
- https://github.com/saitoha/libsixel/commit/7808a06b88c11dbc502318cdd51fa374f8cd47ee
- https://github.com/saitoha/libsixel/issues/75
- https://github.com/saitoha/libsixel/releases/tag/v1.8.5
Frequently Asked Questions
What is CVE-2020-21050?
CVE-2020-21050 is a vulnerability in Libsixel prior to version 1.8.3 that allows a stack buffer overflow.
How does CVE-2020-21050 impact Libsixel?
CVE-2020-21050 can be exploited to cause a stack buffer overflow in the gif_process_raster function in Libsixel.
What is the severity of CVE-2020-21050?
CVE-2020-21050 has a severity value of 6.5, which is considered medium.
How can I fix CVE-2020-21050?
To fix CVE-2020-21050, you should update your Libsixel version to 1.8.3 or later.
Where can I find more information about CVE-2020-21050?
You can find more information about CVE-2020-21050 in the following references: [Link 1](https://bitbucket.org/netbsd/pkgsrc/commits/a27113e21179cbfbfae0c35f6a9edd6aa498faae), [Link 2](https://cwe.mitre.org/data/definitions/121.html), [Link 3](https://github.com/saitoha/libsixel/blob/master/ChangeLog).
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