Vulnerability in Ietf Internet Key Exchange
CVE-2018-5389
The Internet Key Exchange v1 main mode is vulnerable to offline dictionary or brute force attacks. Reusing a key pair across different versions and modes of IKE could lead to cross-protocol authentication bypasses. It is well known, that the aggressive mode of IKEv1 PSK is vulnerable to offline dictionary or brute force attacks. For the main mode, however, only an online attack against PSK authentication was thought to be feasible. This vulnerability could allow an attacker to recover a weak Pre-Shared Key or enable the impersonation of a victim host or network.
EPSS: 0.030 (86.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Ietf Internet_key_exchange — versions 1.0
- Strongswan — versions 5.5.1
Weakness classification (CWE)
References
- cret@cert.org (Third Party Advisory)
- cret@cert.org (US Government Resource, Third Party Advisory)
- cret@cert.org (Exploit, Third Party Advisory)
- cret@cert.org (Third Party Advisory)
- cret@cert.org
Frequently asked questions
- What is CVE-2018-5389?
- CVE-2018-5389 is a medium-severity vulnerability in Ietf Internet Key Exchange, classified under Weak Password Requirements. CVSS score: 5.9/10. Published 2018-09-06.
- How severe is CVE-2018-5389?
- Medium severity. CVSS v3 base score is 5.9 out of 10.