What is the severity of CVE-2021-21861?

CVE-2021-21861 is classified as a high-severity vulnerability due to its potential to lead to a heap-based buffer overflow.

How do I fix CVE-2021-21861?

To fix CVE-2021-21861, update GPAC to version 0.5.2-426-gc5ad4e4+dfsg5-5, 1.0.1+dfsg1-4+deb11u3, or 2.2.1+dfsg1-3.

Which versions of GPAC are affected by CVE-2021-21861?

Versions of GPAC affected by CVE-2021-21861 include 1.0.1 and earlier.

What components of GPAC are impacted by CVE-2021-21861?

CVE-2021-21861 impacts the MPEG-4 decoding functionality, specifically the processing of the 'hdlr' FOURCC code.

Is CVE-2021-21861 exploitable in all environments?

CVE-2021-21861 is exploitable when processing specially crafted MPEG-4 inputs, which may not be present in all environments.

Vulnerability/
CVE-2021-21861

high

8.8

CWE

119 681 680

16/8/2021

3/8/2024

CVE-2021-21861: Buffer Overflow

First published: Mon Aug 16 2021(Updated: )

An exploitable integer truncation vulnerability exists within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. When processing the 'hdlr' FOURCC code, a specially crafted MPEG-4 input can cause an improper memory allocation 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 Linux	=11.0

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Frequently Asked Questions

What is the severity of CVE-2021-21861?
CVE-2021-21861 is classified as a high-severity vulnerability due to its potential to lead to a heap-based buffer overflow.
How do I fix CVE-2021-21861?
To fix CVE-2021-21861, update GPAC to version 0.5.2-426-gc5ad4e4+dfsg5-5, 1.0.1+dfsg1-4+deb11u3, or 2.2.1+dfsg1-3.
Which versions of GPAC are affected by CVE-2021-21861?
Versions of GPAC affected by CVE-2021-21861 include 1.0.1 and earlier.
What components of GPAC are impacted by CVE-2021-21861?
CVE-2021-21861 impacts the MPEG-4 decoding functionality, specifically the processing of the 'hdlr' FOURCC code.
Is CVE-2021-21861 exploitable in all environments?
CVE-2021-21861 is exploitable when processing specially crafted MPEG-4 inputs, which may not be present in all environments.

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collector/nvd-index
agent/software-canonical-lookup-request
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vendor/debian
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