#VU51742 Heap-based buffer overflow in libebml - CVE-2021-3405

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Main Vulnerability Database Vulnerabilities #VU51742

#VU51742 Heap-based buffer overflow in libebml - CVE-2021-3405

Published: March 26, 2021


Vulnerability identifier: #VU51742
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-3405
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
libebml
Software vendor:
www.matroska.org

Description

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

The vulnerability exists due to a boundary error in EbmlString::ReadData and EbmlUnicodeString::ReadData in libebml. A remote attacker can pass specially crafted file to the application, trigger heap-based buffer overflow and execute arbitrary code on the target system.

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


Remediation

Install updates from vendor's website.

External links