Vulnerability Description
strongSwan 4.3.0 through 5.x before 5.3.2 and strongSwan VPN Client before 1.4.6, when using EAP or pre-shared keys for authenticating an IKEv2 connection, does not enforce server authentication restrictions until the entire authentication process is complete, which allows remote servers to obtain credentials by using a valid certificate and then reading the responses.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Strongswan | Strongswan Vpn Client | <= 1.4.5 |
| Canonical | Ubuntu Linux | 14.04 |
| Debian | Debian Linux | 8.0 |
| Strongswan | Strongswan | 4.3.0 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-updates/2015-06/msg00040.html
- http://www.debian.org/security/2015/dsa-3282Patch
- http://www.openwall.com/lists/oss-security/2015/05/29/6
- http://www.openwall.com/lists/oss-security/2015/05/29/7
- http://www.openwall.com/lists/oss-security/2015/06/08/4
- http://www.securityfocus.com/bid/74933
- http://www.securitytracker.com/id/1032514
- http://www.ubuntu.com/usn/USN-2628-1Patch
- https://bugzilla.suse.com/show_bug.cgi?id=933591
- https://play.google.com/store/apps/details?id=org.strongswan.androidPatch
- https://www.strongswan.org/blog/2015/06/08/strongswan-vulnerability-%2528cve-201PatchVendor Advisory
- https://www.suse.com/security/cve/CVE-2015-4171.html
- http://lists.opensuse.org/opensuse-updates/2015-06/msg00040.html
- http://www.debian.org/security/2015/dsa-3282Patch
- http://www.openwall.com/lists/oss-security/2015/05/29/6
FAQ
What is CVE-2015-4171?
CVE-2015-4171 is a vulnerability with a CVSS score of 2.6 (LOW). strongSwan 4.3.0 through 5.x before 5.3.2 and strongSwan VPN Client before 1.4.6, when using EAP or pre-shared keys for authenticating an IKEv2 connection, does not enforce server authentication restr...
How severe is CVE-2015-4171?
CVE-2015-4171 has been rated LOW with a CVSS base score of 2.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2015-4171?
Check the references section above for vendor advisories and patch information. Affected products include: Strongswan Strongswan Vpn Client, Canonical Ubuntu Linux, Debian Debian Linux, Strongswan Strongswan.