Improper input validation in Strongswan
CVE-2015-8023
The server implementation of the EAP-MSCHAPv2 protocol in the eap-mschapv2 plugin in strongSwan 4.2.12 through 5.x before 5.3.4 does not properly validate local state, which allows remote attackers to bypass authentication via an empty Success message in response to an initial Challenge message.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v2 metric
CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.026 (84.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 84.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000
Affected products
- Strongswan — versions 4.2.12, 4.2.13, 4.2.14
- Canonical Ubuntu Linux — versions 14.04, 15.04, 15.10
Weakness classification (CWE)
References
- lists.opensuse.org/opensuse-security-announce/2015-12/msg00025.html (vendor-advisory)
- www.strongswan.org/blog/2015/11/16/strongswan-vulnerability-(cve-2015-8023).html
- lists.opensuse.org/opensuse-updates/2015-11/msg00139.html (vendor-advisory)
- www.securityfocus.com/bid/84947 (vdb-entry)
- www.debian.org/security/2015/dsa-3398 (vendor-advisory)
- www.ubuntu.com/usn/USN-2811-1 (vendor-advisory)