#VU61598 Heap-based buffer overflow in libsox - CVE-2021-40426

Vulnerability identifier: #VU61598

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-40426

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

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

Vendor: Sound Exchange

Description

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

The vulnerability exists due to a boundary error in the sphere.c start_read() functionality. A remote attacker can use a specially crafted file, 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.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

libsox: 14.4.2

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External links
https://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1434

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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.