CVEvulnerability

CVE-2020-5947

4.3 MEDIUM Published 2020-11-19 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-11-19
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS 2.0 ([email protected])
4.0 MEDIUM — AV:N/AC:L/Au:S/C:P/I:N/A:N

Description

In versions 16.0.0-16.0.0.1 and 15.1.0-15.1.1, on specific BIG-IP platforms, attackers may be able to obtain TCP sequence numbers from the BIG-IP system that can be reused in future connections with the same source and destination port and IP numbers. Only these platforms are affected: BIG-IP 2000 series (C112), BIG-IP 4000 series (C113), BIG-IP i2000 series (C117), BIG-IP i4000 series (C115), BIG-IP Virtual Edition (VE).

Affected configurations

• f5 big-ip access policy manager (>= 15.0.0 < 15.1.2) • f5 big-ip access policy manager (>= 16.0.0 < 16.0.1) • f5 big-ip advanced firewall manager (>= 15.0.0 < 15.1.2) • f5 big-ip advanced firewall manager (>= 16.0.0 < 16.0.1) • f5 big-ip advanced web application firewall (>= 15.0.0 < 15.1.2) • f5 big-ip advanced web application firewall (>= 16.0.0 < 16.0.1) • f5 big-ip analytics (>= 15.0.0 < 15.1.2) • f5 big-ip analytics (>= 16.0.0 < 16.0.1) • f5 big-ip application acceleration manager (>= 15.0.0 < 15.1.2) • f5 big-ip application acceleration manager (>= 16.0.0 < 16.0.1) • f5 big-ip application security manager (>= 15.0.0 < 15.1.2) • f5 big-ip application security manager (>= 16.0.0 < 16.0.1) • f5 big-ip ddos hybrid defender (>= 15.0.0 < 15.1.2) • f5 big-ip ddos hybrid defender (>= 16.0.0 < 16.0.1) • f5 big-ip domain name system (>= 15.0.0 < 15.1.2) • f5 big-ip domain name system (>= 16.0.0 < 16.0.1) • f5 big-ip fraud protection service (>= 15.0.0 < 15.1.2) • f5 big-ip fraud protection service (>= 16.0.0 < 16.0.1) • f5 big-ip global traffic manager (>= 15.0.0 <= 15.1.2) • f5 big-ip global traffic manager (>= 16.0.0 < 16.0.1) • f5 big-ip link controller (>= 15.0.0 < 15.1.2) • f5 big-ip link controller (>= 16.0.0 < 16.0.1) • f5 big-ip local traffic manager (>= 15.0.0 < 15.1.2) • f5 big-ip local traffic manager (>= 16.0.0 < 16.0.1) • f5 big-ip policy enforcement manager (>= 15.0.0 < 15.1.2) • f5 big-ip policy enforcement manager (>= 16.0.0 < 16.0.1) • f5 ssl orchestrator (>= 15.0.0 < 15.1.2) • f5 ssl orchestrator (>= 16.0.0 < 16.0.1)

References