Vulnerability identifier: #VU40606
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:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
libreswan
Universal components / Libraries /
Libraries used by multiple products
Vendor: libreswan.org
Description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
The pluto IKE daemon in libreswan before 3.15 and Openswan before 2.6.45, when built with NSS, allows remote attackers to cause a denial of service (assertion failure and daemon restart) via a zero DH g^x value in a KE payload in a IKE packet.
Mitigation
Install update from vendor's website.
Vulnerable software versions
libreswan: 3.14
External links
http://rhn.redhat.com/errata/RHSA-2015-1979.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.securityfocus.com/bid/77536
http://www.securitytracker.com/id/1033418
http://libreswan.org/security/CVE-2015-3240/CVE-2015-3240.txt
http://lists.openswan.org/pipermail/users/2015-August/023401.html
http://security.gentoo.org/glsa/201603-13
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.