Information disclosure in Strongswan
CVE-2015-4171
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.
Vulnerability class: Information Disclosure
EPSS: 0.020 (79.0th percentile) — read the EPSS interpretation.
Affected products
- Strongswan — versions 4.3.0, 4.3.1, 4.3.2
- Strongswan Strongswan_vpn_client
- Canonical Ubuntu_linux — versions 14.04, 14.10, 15.04
- Debian Debian_linux — versions 8.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (vdb-entry, x_refsource_SECTRACK)
- cve@mitre.org (x_refsource_CONFIRM, Patch, Vendor Advisory)
- cve@mitre.org (vendor-advisory, x_refsource_SUSE)
- cve@mitre.org (mailing-list, x_refsource_MLIST)
- cve@mitre.org (x_refsource_CONFIRM)
- cve@mitre.org (mailing-list, x_refsource_MLIST)
- cve@mitre.org (mailing-list, x_refsource_MLIST)
- cve@mitre.org (x_refsource_CONFIRM, Patch)
- cve@mitre.org (x_refsource_UBUNTU, vendor-advisory, Patch)
- cve@mitre.org (vendor-advisory, Patch, x_refsource_DEBIAN)
Frequently asked questions
- What is CVE-2015-4171?
- CVE-2015-4171 is a vulnerability in Strongswan, classified under Information Disclosure. Published 2015-06-10.
- Is CVE-2015-4171 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.