Denial of service in OpenSSL

1) Resource management error

EUVDB-ID: #VU78798

Risk: Low

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-3817

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

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 within the application when checking the long DH keys. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

OpenSSL: 1.0.2 - 3.1.1

CPE2.3

• cpe:2.3:a:openssl_software_foundation:openssl:3.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:openssl_software_foundation:openssl:3.0.9:*:*:*:*:*:*:*
• cpe:2.3:a:openssl_software_foundation:openssl:1.1.1u:*:*:*:*:*:*:*
• cpe:2.3:a:openssl_software_foundation:openssl:1.0.2zh:*:*:*:*:*:*:*

External links

http://www.openssl.org/news/secadv/20230731.txt

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.