CVEvulnerability

CVE-2020-27720

7.5 HIGH Published 2020-12-24 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-12-24
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:N/A:P

Description

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

• f5 big-ip carrier-grade nat (>= 13.1.0 <= 13.1.3) • f5 big-ip carrier-grade nat (>= 14.1.0 < 14.1.3.1) • f5 big-ip carrier-grade nat (>= 15.1.0 < 15.1.1) • f5 big-ip carrier-grade nat (>= 16.0.0 < 16.0.1) • f5 big-ip local traffic manager (>= 13.1.0 <= 13.1.3) • f5 big-ip local traffic manager (>= 14.1.0 < 14.1.3.1) • f5 big-ip local traffic manager (>= 15.1.0 < 15.1.1) • f5 big-ip local traffic manager (>= 16.0.0 < 16.0.1)

References