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[email protected]CVE-2020-27721

HistoryDec 24, 2020 - 3:15 p.m.

CVE-2020-27721

2020-12-2415:15:12

[email protected]

web.nvd.nist.gov

cve-2020-27721

big-ip

dns

ltm

gslb

security

vulnerability

nvd

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

0.001 Low

EPSS

Percentile

42.6%

JSON

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.

Affected configurations

NVD

Node

f5big-ip_domain_name_systemRange11.6.1–11.6.5

f5big-ip_domain_name_systemRange12.1.0–12.1.5

f5big-ip_domain_name_systemRange13.1.0–13.1.3

f5big-ip_domain_name_systemRange14.1.0–14.1.3.1

f5big-ip_domain_name_systemRange15.0.0–15.1.2

f5big-ip_domain_name_systemRange16.0.0–16.0.1

f5big-ip_global_traffic_managerRange11.6.1–11.6.5

f5big-ip_global_traffic_managerRange12.1.0–12.1.5

f5big-ip_global_traffic_managerRange13.1.0–13.1.3

f5big-ip_global_traffic_managerRange14.1.0–14.1.3.1

f5big-ip_global_traffic_managerRange15.0.0–15.1.2

f5big-ip_global_traffic_managerRange16.0.0–16.0.1

CPENameOperatorVersion
f5:big-ip_domain_name_systemf5 big-ip domain name systemle11.6.5
f5:big-ip_domain_name_systemf5 big-ip domain name systemle12.1.5
f5:big-ip_domain_name_systemf5 big-ip domain name systemle13.1.3
f5:big-ip_domain_name_systemf5 big-ip domain name systemlt14.1.3.1
f5:big-ip_domain_name_systemf5 big-ip domain name systemlt15.1.2
f5:big-ip_domain_name_systemf5 big-ip domain name systemlt16.0.1
f5:big-ip_global_traffic_managerf5 big-ip global traffic managerle11.6.5
f5:big-ip_global_traffic_managerf5 big-ip global traffic managerle12.1.5
f5:big-ip_global_traffic_managerf5 big-ip global traffic managerle13.1.3
f5:big-ip_global_traffic_managerf5 big-ip global traffic managerlt14.1.3.1

CPE	Name	Operator	Version
f5:big-ip_domain_name_system	f5 big-ip domain name system	le	11.6.5
f5:big-ip_domain_name_system	f5 big-ip domain name system	le	12.1.5
f5:big-ip_domain_name_system	f5 big-ip domain name system	le	13.1.3
f5:big-ip_domain_name_system	f5 big-ip domain name system	lt	14.1.3.1
f5:big-ip_domain_name_system	f5 big-ip domain name system	lt	15.1.2
f5:big-ip_domain_name_system	f5 big-ip domain name system	lt	16.0.1
f5:big-ip_global_traffic_manager	f5 big-ip global traffic manager	le	11.6.5
f5:big-ip_global_traffic_manager	f5 big-ip global traffic manager	le	12.1.5
f5:big-ip_global_traffic_manager	f5 big-ip global traffic manager	le	13.1.3
f5:big-ip_global_traffic_manager	f5 big-ip global traffic manager	lt	14.1.3.1

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CNA Affected

[
  {
    "product": "BIG-IP GTM & DNS",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "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

support.f5.com/csp/article/K52035247

Social References

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

0.001 Low

EPSS

Percentile

42.6%

JSON

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