#VU76192 Input validation error in libreswan (Red Hat package) - CVE-2023-2295

Vulnerability identifier: #VU76192

Vulnerability 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-2023-2295

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libreswan (Red Hat package)
Operating systems & Components / Operating system package or component

Vendor: Red Hat Inc.

Description

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

The vulnerability exists due to a missing patch for #VU75709 (CVE-2023-30570). A remote attacker can send a specially crafted IKEv1 Aggressive Mode packet to the daemon and crash it.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libreswan (Red Hat package): before 4.9-3.el8_8

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=2189777

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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.