CVE-2015-3240
First published: Mon Nov 09 2015(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Libreswan | =3.14 |
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Reference 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
- https://libreswan.org/security/CVE-2015-3240/CVE-2015-3240.txt
- https://lists.openswan.org/pipermail/users/2015-August/023401.html
- https://security.gentoo.org/glsa/201603-13
Frequently Asked Questions
What is the severity of CVE-2015-3240?
CVE-2015-3240 has a medium severity rating as it allows remote attackers to induce a denial of service.
How do I fix CVE-2015-3240?
To fix CVE-2015-3240, upgrade libreswan to version 3.15 or higher, or upgrade Openswan to version 2.6.45 or higher.
What does CVE-2015-3240 affect?
CVE-2015-3240 affects libreswan versions before 3.15 and Openswan versions before 2.6.45 when built with NSS.
What is the impact of CVE-2015-3240?
The impact of CVE-2015-3240 is a denial of service due to an assertion failure leading to the restart of the pluto IKE daemon.
How can attackers exploit CVE-2015-3240?
Attackers can exploit CVE-2015-3240 by sending a zero DH g^x value in a KE payload within an IKE packet.
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/references
- agent/weakness
- agent/author
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- agent/event
- agent/first-publish-date
- agent/description
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- agent/software-canonical-lookup-request
- vendor/libreswan
- canonical/libreswan
- version/libreswan/3.14