CVE-2021-21856: Buffer Overflow
First published: Wed Aug 18 2021(Updated: )
Multiple exploitable integer overflow vulnerabilities exist 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 due to unchecked addition 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 |
|---|---|---|
| GPAC MP4Box | =1.0.1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Frequently Asked Questions
What is the severity of CVE-2021-21856?
CVE-2021-21856 has a high severity due to potential remote code execution from an integer overflow.
How do I fix CVE-2021-21856?
To fix CVE-2021-21856, update to the latest version of the GPAC library that addresses this vulnerability.
What software is affected by CVE-2021-21856?
CVE-2021-21856 affects GPAC version 1.0.1 and prior versions.
What types of attacks can CVE-2021-21856 facilitate?
CVE-2021-21856 can facilitate heap-based buffer overflow attacks leading to potential code execution.
Is there a workaround for CVE-2021-21856?
There are no known workarounds for CVE-2021-21856; upgrading the software is recommended.
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/references
- agent/last-modified-date
- agent/severity
- agent/description
- agent/first-publish-date
- agent/event
- agent/source
- agent/weakness
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/gpac
- canonical/gpac mp4box
- version/gpac mp4box/1.0.1