CVE-2021-20205: Divide by Zero
First published: Wed Mar 10 2021(Updated: )
Libjpeg-turbo (versions 2.0.91 and 2.0.90) is vulnerable to a denial of service vulnerability caused by a divide by zero when processing a crafted GIF image. References: <a href="https://github.com/libjpeg-turbo/libjpeg-turbo/issues/493">https://github.com/libjpeg-turbo/libjpeg-turbo/issues/493</a> [<a href="https://github.com/libjpeg-turbo/libjpeg-turbo/issues/493">https://github.com/libjpeg-turbo/libjpeg-turbo/issues/493</a> <a href="https://github.com/libjpeg-turbo/libjpeg-turbo/commit/1719d12e51641cce5c77e259516649ba5ef6303c">https://github.com/libjpeg-turbo/libjpeg-turbo/commit/1719d12e51641cce5c77e259516649ba5ef6303c</a>
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Libjpeg-turbo Libjpeg-turbo | =2.0.90 | |
| Fedoraproject Fedora | =34 | |
| redhat/libjpeg-turbo | <2.1 | 2.1 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1937385
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QMLEY6HLVZAGXIOGGPPUAMRJUA6LB3FD/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TM3AHZEYGYFEDL6AW5RLEAJNVRWEJDFL/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TM3AHZEYGYFEDL6AW5RLEAJNVRWEJDFL/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QMLEY6HLVZAGXIOGGPPUAMRJUA6LB3FD/
- https://github.com/libjpeg-turbo/libjpeg-turbo/issues/493
- https://github.com/libjpeg-turbo/libjpeg-turbo/commit/1719d12e51641cce5c77e259516649ba5ef6303c
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1937387
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1937388
Frequently Asked Questions
What is CVE-2021-20205?
CVE-2021-20205 is a vulnerability in Libjpeg-turbo versions 2.0.91 and 2.0.90 that can be exploited to cause a denial of service by triggering a divide by zero when processing a crafted GIF image.
How severe is CVE-2021-20205?
CVE-2021-20205 has a severity score of 6.5 out of 10, which is considered medium severity.
Which software versions are affected by CVE-2021-20205?
Libjpeg-turbo versions 2.0.91 and 2.0.90 are affected by CVE-2021-20205.
How can CVE-2021-20205 be exploited?
CVE-2021-20205 can be exploited by processing a specially crafted GIF image, which triggers a divide by zero and leads to a denial of service.
Where can I find more information about CVE-2021-20205?
You can find more information about CVE-2021-20205 in the following references: [Reference 1](https://bugzilla.redhat.com/show_bug.cgi?id=1937385), [Reference 2](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QMLEY6HLVZAGXIOGGPPUAMRJUA6LB3FD/), [Reference 3](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TM3AHZEYGYFEDL6AW5RLEAJNVRWEJDFL/).
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