Denial of service in OpenSSL

1) Resource management error

EUVDB-ID: #VU85399

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: CVE-2023-6237

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 the way the EVP_PKEY_public_check() function handles RSA public keys. A remote attacker can supply an RSA key obtained from an untrusted source and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

OpenSSL: 3.0.0 - 3.2.0

CPE2.3

• cpe:2.3:a:openssl_software_foundation:openssl:3.0.12:*:*:*:*:*:*:
• cpe:2.3:a:openssl_software_foundation:openssl:3.1.4:*:*:*:*:*:*:
• cpe:2.3:a:openssl_software_foundation:openssl:3.2.0:*:*:*:*:*:*:

External links

http://www.openssl.org/news/secadv/20240115.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.