Denial of service in OpenSSL



Published: 2024-05-29 | Updated: 2024-06-27
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-4741
CWE-ID CWE-416
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		OpenSSL
Server applications / Encryption software

Vendor OpenSSL Software Foundation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Use-after-free

EUVDB-ID: #VU89861

Risk: Medium

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-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

External links

http://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.



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