Improper Authentication in strongSwan

1) Improper Authentication

EUVDB-ID: #VU41794

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2014-2338

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

IKEv2 in strongSwan 4.0.7 before 5.1.3 allows remote attackers to bypass authentication by rekeying an IKE_SA during (1) initiation or (2) re-authentication, which triggers the IKE_SA state to be set to established.

Mitigation

Install update from vendor's website.

Vulnerable software versions

strongSwan: 4.0.7 - 5.1.2

CPE2.3

• cpe:2.3:a:strongswan_org:strongswan:4.0.7:*:*:*:*:*:*:*
• cpe:2.3:a:strongswan_org:strongswan:4.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:strongswan_org:strongswan:4.1.1:*:*:*:*:*:*:*

External links

https://lists.opensuse.org/opensuse-security-announce/2014-04/msg00010.html
https://lists.opensuse.org/opensuse-updates/2014-05/msg00064.html
https://lists.opensuse.org/opensuse-updates/2014-05/msg00066.html
https://secunia.com/advisories/57823
https://www.debian.org/security/2014/dsa-2903
https://www.securityfocus.com/bid/66815
https://www.strongswan.org/blog/2014/04/14/strongswan-authentication-bypass-vulnerability-%28cve-2014-2338%29.html

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.