Vulnerability in F5 Big-Ip Domain Name System
CVE-2018-5538
On F5 BIG-IP DNS 13.1.0-13.1.0.7, 12.1.3-12.1.3.5, DNS Express / DNS Zones accept NOTIFY messages on the management interface from source IP addresses not listed in the 'Allow NOTIFY From' configuration parameter when the db variable "dnsexpress.notifyport" is set to any value other than the default of "0".
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.008 (54.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- F5 Big-Ip Domain Name System
- F5 Big-Ip Global Traffic Manager
- F5 Big-Ip Link Controller
- F5 Big-Ip Local Traffic Manager
- F5 Networks, Inc. Big-Ip (DNS) — versions 13.1.0-13.1.0.7, 12.1.3-12.1.3.5
References
- support.f5.com/csp/article/K45435121 (Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2018-5538?
- CVE-2018-5538 is a low-severity vulnerability in F5 Big-Ip Domain Name System. CVSS score: 3.7/10. Published 2018-07-25.
- How severe is CVE-2018-5538?
- Low severity. CVSS v3 base score is 3.7 out of 10.