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[email protected]CVE-2020-27720

HistoryDec 24, 2020 - 4:15 p.m.

CVE-2020-27720

2020-12-2416:15:15

[email protected]

web.nvd.nist.gov

cve-2020-27720

big-ip

ltm

cgnat

security

vulnerability

nat66

pba

sp-dag

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

On BIG-IP LTM/CGNAT version 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.3, and 13.1.0-13.1.3.5, when processing NAT66 traffic with Port Block Allocation (PBA) mode and SP-DAG enabled, and dag-ipv6-prefix-len configured with a value less than the default of 128, an undisclosed traffic pattern may cause the Traffic Management Microkernel (TMM) to restart.

Affected configurations

NVD

Node

f5big-ip_carrier-grade_natRange13.1.0–13.1.3

f5big-ip_carrier-grade_natRange14.1.0–14.1.3.1

f5big-ip_carrier-grade_natRange15.1.0–15.1.1

f5big-ip_carrier-grade_natRange16.0.0–16.0.1

f5big-ip_local_traffic_managerRange13.1.0–13.1.3

f5big-ip_local_traffic_managerRange14.1.0–14.1.3.1

f5big-ip_local_traffic_managerRange15.1.0–15.1.1

f5big-ip_local_traffic_managerRange16.0.0–16.0.1

CPENameOperatorVersion
f5:big-ip_carrier-grade_natf5 big-ip carrier-grade natle13.1.3
f5:big-ip_carrier-grade_natf5 big-ip carrier-grade natlt14.1.3.1
f5:big-ip_carrier-grade_natf5 big-ip carrier-grade natlt15.1.1
f5:big-ip_carrier-grade_natf5 big-ip carrier-grade natlt16.0.1
f5:big-ip_local_traffic_managerf5 big-ip local traffic managerle13.1.3
f5:big-ip_local_traffic_managerf5 big-ip local traffic managerlt14.1.3.1
f5:big-ip_local_traffic_managerf5 big-ip local traffic managerlt15.1.1
f5:big-ip_local_traffic_managerf5 big-ip local traffic managerlt16.0.1

CPE	Name	Operator	Version
f5:big-ip_carrier-grade_nat	f5 big-ip carrier-grade nat	le	13.1.3
f5:big-ip_carrier-grade_nat	f5 big-ip carrier-grade nat	lt	14.1.3.1
f5:big-ip_carrier-grade_nat	f5 big-ip carrier-grade nat	lt	15.1.1
f5:big-ip_carrier-grade_nat	f5 big-ip carrier-grade nat	lt	16.0.1
f5:big-ip_local_traffic_manager	f5 big-ip local traffic manager	le	13.1.3
f5:big-ip_local_traffic_manager	f5 big-ip local traffic manager	lt	14.1.3.1
f5:big-ip_local_traffic_manager	f5 big-ip local traffic manager	lt	15.1.1
f5:big-ip_local_traffic_manager	f5 big-ip local traffic manager	lt	16.0.1

CNA Affected

[
  {
    "product": "BIG-IP LTM/CGNAT",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.3, 13.1.0-13.1.3.5"
      }
    ]
  }
]

References

support.f5.com/csp/article/K04048104

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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