CVE-2020-27721
High
Description
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
F5 Big-ip Domain Name System
PublishedDec 24, 2020
First seenDec 24, 2020
How to fix
Update
- f5 big-ip_domain_name_system14.1.3.1, 15.1.2, 16.0.1 or later
- f5 big-ip_global_traffic_manager14.1.3.1, 15.1.2, 16.0.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| f5 big-ip_domain_name_system | 11.6.1 ≤ v ≤ 11.6.5, 12.1.0 ≤ v ≤ 12.1.5, 13.1.0 ≤ v ≤ 13.1.3, 14.1.0 ≤ v < 14.1.3.1, 15.0.0 ≤ v < 15.1.2, 16.0.0 ≤ v < 16.0.1 | 14.1.3.1, 15.1.2, 16.0.1 |
| f5 big-ip_global_traffic_manager | 11.6.1 ≤ v ≤ 11.6.5, 12.1.0 ≤ v ≤ 12.1.5, 13.1.0 ≤ v ≤ 13.1.3, 14.1.0 ≤ v < 14.1.3.1, 15.0.0 ≤ v < 15.1.2, 16.0.0 ≤ v < 16.0.1 | 14.1.3.1, 15.1.2, 16.0.1 |
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