Resource exhaustion in Mikrotik Routeros
CVE-2017-8338
A vulnerability in MikroTik Version 6.38.5 could allow an unauthenticated remote attacker to exhaust all available CPU via a flood of UDP packets on port 500 (used for L2TP over IPsec), preventing the affected router from accepting new connections; all devices will be disconnected from the router and all logs removed automatically.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.042 (90.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.042 · newest: 0.042 · change: 0.000
Affected products
- Mikrotik Routeros — versions 6.38.5
Weakness classification (CWE)
References
- cxsecurity.com/issue/WLB-2017050062 (Exploit, Third Party Advisory)
- www.vulnerability-lab.com/get_content.php (Exploit, Third Party Advisory)
- seclists.org/fulldisclosure/2017/May/59 (Exploit, Third Party Advisory)
- packetstormsecurity.com/files/142538/MikroTik-RouterBoard-6.38.5-Denial-Of-Serv… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-8338?
- CVE-2017-8338 is a high-severity vulnerability in Mikrotik Routeros, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2017-05-18.
- How severe is CVE-2017-8338?
- High severity. CVSS v3 base score is 7.5 out of 10.