Denial of service in OpenSSL

1) Use-after-free

EUVDB-ID: #VU89861

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-4741

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error within the SSL_free_buffers() function. A remote attacker can trigger a use-after-free error and perform a denial of service (DoS) attack.

Note, the vulnerability affects only applications that call the vulnerable function.

Mitigation

Install update from vendor's website.

Vulnerable software versions

OpenSSL: 1.1.1 - 3.3.0

CPE2.3

• cpe:2.3:a:openssl_software_foundation:openssl:1.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:openssl_software_foundation:openssl:1.1.1n:*:*:*:*:*:*:*
• cpe:2.3:a:openssl_software_foundation:openssl:1.1.1a:*:*:*:*:*:*:*
• cpe:2.3:a:openssl_software_foundation:openssl:1.1.1w:*:*:*:*:*:*:*
• cpe:2.3:a:openssl_software_foundation:openssl:1.1.1v:*:*:*:*:*:*:*
• cpe:2.3:a:openssl_software_foundation:openssl:1.1.1u:*:*:*:*:*:*:*
• cpe:2.3:a:openssl_software_foundation:openssl:1.1.1t:*:*:*:*:*:*:*
• cpe:2.3:a:openssl_software_foundation:openssl:1.1.1s:*:*:*:*:*:*:*
• cpe:2.3:a:openssl_software_foundation:openssl:1.1.1r:*:*:*:*:*:*:*
• cpe:2.3:a:openssl_software_foundation:openssl:1.1.1q:*:*:*:*:*:*:*

External links

https://www.openssl.org/news/secadv/20240528.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.