Vulnerability identifier: #VU33297

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-2037

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Openswan
Server applications / Remote access servers, VPN

Vendor: openswan.org

Description

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

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (NULL pointer dereference and IKE daemon restart) via IKEv2 packets that lack expected payloads.

Mitigation
Update to version 2.6.41.

Vulnerable software versions

Openswan: 2.6.40

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External links
http://www.openwall.com/lists/oss-security/2014/02/18/1
http://www.openwall.com/lists/oss-security/2014/02/20/2
http://www.securityfocus.com/bid/65629
http://lists.openswan.org/pipermail/users/2014-February/022898.html

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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.