CVE-2018-5389
MEDIUMEPSS 86th pctlDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploit Intelligence
Elevated risk: more likely to be exploited than 86% of all known CVEs.
References
Related Vulnerabilities
Other CWE-521 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2019-17444 | Critical | 9.8 | 69% | - | Fix |
| CVE-2012-2441 | High | 8.5 | 8.6% | - | Fix |
| CVE-2017-3186 | Critical | 9.8 | 6.1% | - | - |
| CVE-2018-1000134 | Critical | 9.8 | 4.7% | - | - |
| CVE-2019-18988 | High | 7.0 | 4.7% | KEV | - |
| CVE-2017-6339 | Medium | 6.5 | 4.1% | - | - |
Common questions
How do I fix CVE-2018-5389?
No published fix for CVE-2018-5389 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2018-5389 being actively exploited?
Not that we know of. CVE-2018-5389 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 3.0% is the estimated probability that it will be exploited in the next 30 days. That is higher than 86% of all scored CVEs.
How severe is CVE-2018-5389?
CVE-2018-5389 has a CVSS v3 base score of 5.9, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.