Vulnerability identifier: #VU64520

Vulnerability risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-25802

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 gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the AVI_ExtractSubtitle component. A remote attacker can create a specially crafted .avi file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

VLC Media Player: 3.0.0 - 3.0.11.1

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External links
http://code.videolan.org/videolan/vlc-3.0/-/commit/0660acc3ab64d2c3ad99cae887a438f0648faa72

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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.