Vulnerability identifier: #VU49889

Vulnerability risk: Medium

CVSSv3.1: 5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-25803

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
VLC Media Player
Client/Desktop applications / Multimedia software

Vendor: VideoLAN

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition within the vlc_input_attachment_New component. A remote authenticated attacker can create a specially crafted .avi file, trick the victim into opening it, trigger out-of-bounds read error and cause a denial of service condition on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

VLC Media Player: 3.0.0 - 3.0.11

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External links
http://www.videolan.org/security/sb-vlc3012.html
http://code.videolan.org/videolan/vlc-3.0/-/commit/56cbe9c4b59edbdc5e1bb2687992f3bbf492eccb

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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