Vulnerability identifier: #VU55904

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21852

CWE-ID: CWE-190

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
GPAC
Client/Desktop applications / Multimedia software

Vendor: GPAC

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in the MPEG-4 decoding functionality within the "stss” decoder. A remote attacker can trick a victim to open a video, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

GPAC: 1.0.1

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External links
http://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1297

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.