Vulnerability identifier: #VU24676

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-2019-2126

CWE-ID: CWE-415

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libwebm
Universal components / Libraries / Libraries used by multiple products

Vendor: WebM Project

Description

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

The vulnerability exists due to a boundary error when processing user-supplied data within the ParseContentEncodingEntry() function of mkvparser.cpp. A remote attacker can pass specially crafted data to the application, trigger a double free error and execute arbitrary code on the target system.

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

Mitigation
Install update from vendor's website.

Vulnerable software versions

libwebm: 1.0.0.22 - 1.0.0.27

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External links
http://github.com/webmproject/libvpx/commit/6a7c84a2449dcc70de2525df209afea908622399#diff-6bf546b8d7f5cc4db353cdd906a8f5e7

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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.