#VU88534 Reachable assertion in libreswan - CVE-2024-3652

Vulnerability identifier: #VU88534

Vulnerability risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-3652

CWE-ID: CWE-617

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libreswan
Universal components / Libraries / Libraries used by multiple products

Vendor: libreswan.org

Description

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

The vulnerability exists due to a reachable assertion within the compute_proto_keymat() function when handling IKEv1 packets within the default AH/ESP responder. A remote authenticated user can send specially crafted packets to the server and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libreswan: 3.22 - 4.14

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External links
https://libreswan.org/security/CVE-2024-3652
https://github.com/libreswan/libreswan/releases/tag/v4.15

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.