#VU69350 Division by zero in speex - CVE-2020-23903

Vulnerability identifier: #VU69350

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-23903

CWE-ID: CWE-369

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
speex
Other software / Other software solutions

Vendor: www.speex.org

Description

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

The vulnerability exists due to a division by zero error when handling .wav files. A remote attacker can trick the victim into opening a specially crafted .wav file and crash the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

speex: 0.0.1 - 1.1.12

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External links
https://github.com/xiph/speex/issues/13
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R3SEV2ZRR47GSD3M7O5PH4XEJMKJJNG2/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LXCRAYNW5ESCE2PIGTUXZNZHNYFLJ6PX/

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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.