CVE-2015-4171
StrongSwan Server IKEv2 Authentication Bypass 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.
INFO
Published Date :
June 10, 2015, 6:59 p.m.
Last Modified :
April 12, 2025, 10:46 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2015-4171
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | LOW | [email protected] |
Solution
- Upgrade the StrongSwan packages.
- Apply the appropriate vendor-supplied patch or update to remediate this vulnerability.
Public PoC/Exploit Available at Github
CVE-2015-4171 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2015-4171.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2015-4171 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2015-4171
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Imoro Umar Farouq's report on Internal Network Penetration Testing
Shell
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2015-4171 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2015-4171 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-updates/2015-06/msg00040.html Added Reference http://www.debian.org/security/2015/dsa-3282 Added Reference http://www.openwall.com/lists/oss-security/2015/05/29/6 Added Reference http://www.openwall.com/lists/oss-security/2015/05/29/7 Added Reference http://www.openwall.com/lists/oss-security/2015/06/08/4 Added Reference http://www.securityfocus.com/bid/74933 Added Reference http://www.securitytracker.com/id/1032514 Added Reference http://www.ubuntu.com/usn/USN-2628-1 Added Reference https://bugzilla.suse.com/show_bug.cgi?id=933591 Added Reference https://play.google.com/store/apps/details?id=org.strongswan.android Added Reference https://www.strongswan.org/blog/2015/06/08/strongswan-vulnerability-%2528cve-2015-4171%2529.html Added Reference https://www.suse.com/security/cve/CVE-2015-4171.html -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 08, 2017
Action Type Old Value New Value Added Reference https://www.suse.com/security/cve/CVE-2015-4171.html [No Types Assigned] Added Reference https://bugzilla.suse.com/show_bug.cgi?id=933591 [No Types Assigned] Added Reference http://lists.opensuse.org/opensuse-updates/2015-06/msg00040.html [No Types Assigned] -
CVE Modified by [email protected]
Nov. 28, 2016
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/74933 [No Types Assigned] -
Modified Analysis by [email protected]
Jun. 11, 2015
Action Type Old Value New Value Added CPE Configuration Configuration 1 OR *cpe:2.3:a:strongswan:strongswan_vpn_client:1.4.5:*:*:*:*:android:*:* (and previous) Configuration 2 OR *cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Configuration 3 OR *cpe:2.3:a:strongswan:strongswan:4.3.0:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:4.3.1:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:4.3.2:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:4.3.3:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:4.3.4:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:4.3.5:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:4.3.6:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:4.3.7:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:4.4.0:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:4.4.1:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:4.5.0:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:4.5.1:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:4.5.2:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:4.5.3:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:4.6.0:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:4.6.1:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:4.6.2:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:4.6.3:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:4.6.4:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:5.0.0:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:5.0.1:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:5.0.2:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:5.0.3:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:5.0.4:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:5.1.0:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:5.1.1:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:5.1.2:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:5.1.3:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:5.2.0:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:5.2.1:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:5.2.2:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:5.2.3:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:5.3.0:*:*:*:*:*:*:* *cpe:2.3:a:strongswan:strongswan:5.3.1:*:*:*:*:*:*:* Added CVSS V2 (AV:N/AC:H/Au:N/C:P/I:N/A:N) Changed Reference Type https://www.strongswan.org/blog/2015/06/08/strongswan-vulnerability-%2528cve-2015-4171%2529.html No Types Assigned https://www.strongswan.org/blog/2015/06/08/strongswan-vulnerability-%2528cve-2015-4171%2529.html Advisory, Patch Changed Reference Type http://www.ubuntu.com/usn/USN-2628-1 No Types Assigned http://www.ubuntu.com/usn/USN-2628-1 Patch Changed Reference Type http://www.debian.org/security/2015/dsa-3282 No Types Assigned http://www.debian.org/security/2015/dsa-3282 Patch Changed Reference Type https://play.google.com/store/apps/details?id=org.strongswan.android No Types Assigned https://play.google.com/store/apps/details?id=org.strongswan.android Patch Added CWE CWE-200 -
Initial Analysis by [email protected]
Jun. 11, 2015
Action Type Old Value New Value -
Initial Analysis by [email protected]
Jun. 11, 2015
Action Type Old Value New Value
Vulnerability Scoring Details
Base CVSS Score: 2.6
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.01 }} -0.24%
score
0.75970
percentile