Vulnerability in F5 Big-Ip Domain Name System
CVE-2020-27721
In versions 16.0.0-16.0.0.1, 15.1.0-15.1.1, 14.1.0-14.1.3, 13.1.0-13.1.3.5, 12.1.0-12.1.5.2, and 11.6.1-11.6.5.2, in a BIG-IP DNS / BIG-IP LTM GSLB deployment, under certain circumstances, the BIG-IP DNS system may stop using a BIG-IP LTM virtual server for DNS response.
EPSS: 0.010 (59.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- F5 Big-ip_domain_name_system
- F5 Big-ip_global_traffic_manager
- N/a Big-ip Gtm & Dns — versions 16.0.0-16.0.0.1, 15.1.0-15.1.1, 14.1.0-14.1.3, 13.1.0-13.1.3.5, 12.1.0-12.1.5.2, 11.6.1-11.6.5.2
References
- f5sirt@f5.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-27721?
- CVE-2020-27721 is a high-severity vulnerability in F5 Big-Ip Domain Name System. CVSS score: 7.5/10. Published 2020-12-24.
- How severe is CVE-2020-27721?
- High severity. CVSS v3 base score is 7.5 out of 10.