#VU89861 Use-after-free in OpenSSL - CVE-2024-4741

Vulnerability identifier: #VU89861

Vulnerability risk: Medium

CVSSv4.0: [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

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenSSL
Server applications / Encryption software

Vendor: OpenSSL Software Foundation

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: 1.1.1w - 1.1.1p, 3.0.0 - 3.0.13, 3.1.0 - 3.1.5, 3.2.0, 3.2.1, 3.3.0

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External links
http://www.openssl.org/news/secadv/20240528.txt

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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.