PT-2020-16782 · F5 · Big-Ip Ltm/Cgnat
Published
2020-12-24
·
Updated
2020-12-28
·
CVE-2020-27720
CVSS v3.1
7.5
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
BIG-IP LTM/CGNAT versions 13.1.0 through 13.1.3.5
BIG-IP LTM/CGNAT versions 14.1.0 through 14.1.3
BIG-IP LTM/CGNAT versions 15.1.0 through 15.1.0.5
BIG-IP LTM/CGNAT versions 16.0.0 through 16.0.0.1
Description
The issue occurs 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.Recommendations
For BIG-IP LTM/CGNAT versions 13.1.0 through 13.1.3.5, consider updating the configuration to use the default
dag-ipv6-prefix-len value of 128 or higher to prevent TMM restarts.
For BIG-IP LTM/CGNAT versions 14.1.0 through 14.1.3, consider updating the configuration to use the default dag-ipv6-prefix-len value of 128 or higher to prevent TMM restarts.
For BIG-IP LTM/CGNAT versions 15.1.0 through 15.1.0.5, consider updating the configuration to use the default dag-ipv6-prefix-len value of 128 or higher to prevent TMM restarts.
For BIG-IP LTM/CGNAT versions 16.0.0 through 16.0.0.1, consider updating the configuration to use the default dag-ipv6-prefix-len value of 128 or higher to prevent TMM restarts.Fix
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Related Identifiers
Affected Products
Big-Ip Ltm/Cgnat