Denial of service in libreswan



Published: 2023-03-01 | Updated: 2023-03-01
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-23009
CWE-ID CWE-617
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		libreswan
Universal components / Libraries / Libraries used by multiple products

Vendor libreswan.org

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Reachable Assertion

EUVDB-ID: #VU72679

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-23009

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

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

The vulnerability exists due to a reachable assertion. A remote attacker can pass a specially crafted IKEv2 TS payload with an incorrect selector length and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

libreswan: 4.0 - 4.9

External links

http://github.com/libreswan/libreswan/issues/954
http://libreswan.org/security/CVE-2023-23009/CVE-2023-23009.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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