Information disclosure in OpenSSL

1) Cryptographic issues

EUVDB-ID: #VU82349

Risk: Low

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

CVE-ID: CVE-2023-5363

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to an error when processing key and initialisation vector lengths in EVP_EncryptInit_ex2(), EVP_DecryptInit_ex2() and EVP_CipherInit_ex2() function. A remote attacker can gain access to potentially sensitive information.

The following ciphers and cipher modes are impacted: RC2, RC4, RC5, CCM, GCM and OCB.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

OpenSSL: 3.0.0 - 3.1.3

CPE2.3

• cpe:2.3:a:openssl_software_foundation:openssl:3.0.11:*:*:*:*:*:*:
• cpe:2.3:a:openssl_software_foundation:openssl:3.1.3:*:*:*:*:*:*:

External links

http://www.openssl.org/news/secadv/20231024.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.