Vulnerability identifier: #VU69294

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-2021-3497

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
gstreamer
Client/Desktop applications / Multimedia software

Vendor: GStreamer

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when demuxing certain malformed Matroska files. A remote attacker can trick the victim into opening a specially crafted file, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

gstreamer: 1.18.0 - 1.18.3

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External links
http://gstreamer.freedesktop.org/security/sa-2021-0002.html
http://bugzilla.redhat.com/show_bug.cgi?id=1945339

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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.