Data Handling in strongSwan

1) Data Handling

EUVDB-ID: #VU32451

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/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-2014-9221

CWE-ID: CWE-19 - Data Handling

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

strongSwan 4.5.x through 5.2.x before 5.2.1 allows remote attackers to cause a denial of service (invalid pointer dereference) via a crafted IKEv2 Key Exchange (KE) message with Diffie-Hellman (DH) group 1025.

Mitigation

Install update from vendor's website.

Vulnerable software versions

strongSwan: 4.5.0 - 4.5.3

External links

http://lists.fedoraproject.org/pipermail/package-announce/2015-March/153825.html
http://lists.opensuse.org/opensuse-updates/2015-01/msg00054.html
http://secunia.com/advisories/62071
http://secunia.com/advisories/62083
http://secunia.com/advisories/62095
http://secunia.com/advisories/62663
http://strongswan.org/blog/2015/01/05/strongswan-5.2.2-released.html
http://strongswan.org/blog/2015/01/05/strongswan-denial-of-service-vulnerability-(cve-2014-9221).html
http://www.debian.org/security/2015/dsa-3118
http://www.securityfocus.com/bid/71894
http://www.ubuntu.com/usn/USN-2450-1

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.