Vulnerability identifier: #VU59102

Vulnerability risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

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

Vendor: wolfSSL

Description

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

The vulnerability exists due to processing hello packets of the incorrect side in wolfSSL client. A remote attacker with ability to perform MitM attack can cause denial of service. this affects connections using TLS v1.2 or lesser protocol.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

wolfSSL: 4.0 - 5.0.0

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External links
http://github.com/wolfSSL/wolfssl/releases/tag/v5.1.0-stable

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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.