Vulnerability identifier: #VU59521

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-23094

CWE-ID: CWE-476

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 attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error when processing malformed IKEv1 packets. A remote attacker can send specially crafted IKEv1 packet to the application, trigger a NULL pointer dereference error during a logging action on the rejected IKEv1 packet and crash the pluto daemon.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libreswan: 4.2 - 4.5

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External links
http://libreswan.org/security/CVE-2022-23094/CVE-2022-23094.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.