DNS Response Disruption in F5 BIG-IP DNS and LTM
CVE-2020-27721

7.5HIGH

Key Information:

Vendor

F5
Status
Big-ip Gtm & Dns
Vendor
CVE Published:
24 December 2020

What is CVE-2020-27721?

In specific versions of the F5 BIG-IP DNS and BIG-IP LTM, a configuration error may prevent the DNS system from utilizing a designated BIG-IP LTM virtual server for DNS responses under certain conditions, potentially leading to service interruptions.

Affected Version(s)

BIG-IP GTM & DNS 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

https://support.f5.com/csp/article/K52035247
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.