What is the severity of CVE-2021-21842?

CVE-2021-21842 is classified as a high severity vulnerability due to the potential for exploitation via specially crafted MPEG-4 inputs.

How do I fix CVE-2021-21842?

To mitigate CVE-2021-21842, upgrade to GPAC version 0.5.2-426-gc5ad4e4+dfsg5-5, 1.0.1+dfsg1-4+deb11u3, or 2.2.1+dfsg1-3.

What software is affected by CVE-2021-21842?

CVE-2021-21842 affects GPAC Project on Advanced Content library version 1.0.1 and earlier, along with specific Debian Linux versions.

How can CVE-2021-21842 be exploited?

CVE-2021-21842 can be exploited through an integer overflow when processing the 'ssix' FOURCC code in a crafted MPEG-4 file.

Is there a workaround for CVE-2021-21842?

There is no known workaround for CVE-2021-21842 other than applying the recommended software updates.

Vulnerability/
CVE-2021-21842

high

8.8

CWE

119 190 680

25/8/2021

3/8/2024

CVE-2021-21842: Buffer Overflow

First published: Wed Aug 25 2021(Updated: )

An exploitable integer overflow vulnerability exists within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. A specially crafted MPEG-4 input can cause an integer overflow when processing an atom using the 'ssix' FOURCC code, due to unchecked arithmetic resulting in a heap-based buffer overflow that causes memory corruption. An attacker can convince a user to open a video to trigger this vulnerability.

Credit: talos-cna@cisco.com

Affected Software	Affected Version	How to fix
debian/gpac		0.5.2-426-gc5ad4e4+dfsg5-5 1.0.1+dfsg1-4+deb11u3 2.2.1+dfsg1-3
GPAC MP4Box	=1.0.1
Debian	=10.0
Debian	=11.0

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-21842?
CVE-2021-21842 is classified as a high severity vulnerability due to the potential for exploitation via specially crafted MPEG-4 inputs.
How do I fix CVE-2021-21842?
To mitigate CVE-2021-21842, upgrade to GPAC version 0.5.2-426-gc5ad4e4+dfsg5-5, 1.0.1+dfsg1-4+deb11u3, or 2.2.1+dfsg1-3.
What software is affected by CVE-2021-21842?
CVE-2021-21842 affects GPAC Project on Advanced Content library version 1.0.1 and earlier, along with specific Debian Linux versions.
How can CVE-2021-21842 be exploited?
CVE-2021-21842 can be exploited through an integer overflow when processing the 'ssix' FOURCC code in a crafted MPEG-4 file.
Is there a workaround for CVE-2021-21842?
There is no known workaround for CVE-2021-21842 other than applying the recommended software updates.

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collector/mitre-cve
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agent/software-canonical-lookup-request
package-manager/debian
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vendor/debian
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