#VU45987 Resource management error in wolfSSL - CVE-2020-24585

Vulnerability identifier: #VU45987

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-24585

CWE-ID: CWE-399

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 improper management of internal resources with the application within the DTLS handshake implementation in wolfSSL. Clear DTLS application_data messages in epoch 0 do not produce an out-of-order error. Instead, these messages are returned to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

wolfSSL: 4.0 - 4.4.0

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External links
https://github.com/wolfSSL/wolfssl/pull/3219
https://github.com/wolfSSL/wolfssl/releases/tag/v4.5.0-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.