CVE-2020-5921

Home/CVE/in BIG-IP versions 15.1.0-15.1.0.4, 15.0.0-15.0.1.3, 14.1.0-14.1.2.6, 13.1.0-13.1.3.4, 12.1.0-12.1.5.1, and 11.6.1-11.6.

CVE

in BIG-IP versions 15.1.0-15.1.0.4, 15.0.0-15.0.1.3, 14.1.0-14.1.2.6, 13.1.0-13.1.3.4, 12.1.0-12.1.5.1, and 11.6.1-11.6.

in BIG-IP versions 15.1.0-15.1.0.4, 15.0.0-15.0.1.3, 14.1.0-14.1.2.6, 13.1.0-13.1.3.4, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.2, Syn flood causes large number of MCPD context messages destined to secondary blades consuming memory leading to MCPD failure. This issue affects only VIPRION hosts with two or more blades installed. Single-blade VIPRION hosts are not affected.

HIGH · CVSS 7.5 EPSS 0.00647

Schedule remediation

CVSS base score ≥ 7.0

Sigma rules0 YARA rules0

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Affected Products & Versions

f5 big-ip access policy manager>= 12.1.0 and < 12.1.5.2
f5 big-ip access policy manager>= 14.1.0 and < 14.1.2.7
f5 big-ip access policy manager>= 15.0.0 and < 15.0.1.4
f5 big-ip access policy manager>= 15.1.0 and < 15.1.0.5
f5 big-ip advanced firewall manager>= 12.1.0 and < 12.1.5.2
f5 big-ip advanced firewall manager>= 14.1.0 and < 14.1.2.7
f5 big-ip advanced firewall manager>= 15.0.0 and < 15.0.1.4
f5 big-ip advanced firewall manager>= 15.1.0 and < 15.1.0.5
Show all 44 affected productsf5 big-ip analytics>= 12.1.0 and < 12.1.5.2
f5 big-ip analytics>= 14.1.0 and < 14.1.2.7
f5 big-ip analytics>= 15.0.0 and < 15.0.1.4
f5 big-ip analytics>= 15.1.0 and < 15.1.0.5
f5 big-ip application acceleration manager>= 12.1.0 and < 12.1.5.2
f5 big-ip application acceleration manager>= 14.1.0 and < 14.1.2.7
f5 big-ip application acceleration manager>= 15.0.0 and < 15.0.1.4
f5 big-ip application acceleration manager>= 15.1.0 and < 15.1.0.5
f5 big-ip application security manager>= 12.1.0 and < 12.1.5.2
f5 big-ip application security manager>= 14.1.0 and < 14.1.2.7
f5 big-ip application security manager>= 15.0.0 and < 15.0.1.4
f5 big-ip application security manager>= 15.1.0 and < 15.1.0.5
f5 big-ip domain name system>= 12.1.0 and < 12.1.5.2
f5 big-ip domain name system>= 14.1.0 and < 14.1.2.7
f5 big-ip domain name system>= 15.0.0 and < 15.0.1.4
f5 big-ip domain name system>= 15.1.0 and < 15.1.0.5
f5 big-ip fraud protection service>= 12.1.0 and < 12.1.5.2
f5 big-ip fraud protection service>= 14.1.0 and < 14.1.2.7
f5 big-ip fraud protection service>= 15.0.0 and < 15.0.1.4
f5 big-ip fraud protection service>= 15.1.0 and < 15.1.0.5
f5 big-ip global traffic manager>= 12.1.0 and < 12.1.5.2
f5 big-ip global traffic manager>= 14.1.0 and < 14.1.2.7
f5 big-ip global traffic manager>= 15.0.0 and < 15.0.1.4
f5 big-ip global traffic manager>= 15.1.0 and < 15.1.0.5
f5 big-ip link controller>= 12.1.0 and < 12.1.5.2
f5 big-ip link controller>= 14.1.0 and < 14.1.2.7
f5 big-ip link controller>= 15.0.0 and < 15.0.1.4
f5 big-ip link controller>= 15.1.0 and < 15.1.0.5
f5 big-ip local traffic manager>= 12.1.0 and < 12.1.5.2
f5 big-ip local traffic manager>= 14.1.0 and < 14.1.2.7
f5 big-ip local traffic manager>= 15.0.0 and < 15.0.1.4
f5 big-ip local traffic manager>= 15.1.0 and < 15.1.0.5
f5 big-ip policy enforcement manager>= 12.1.0 and < 12.1.5.2
f5 big-ip policy enforcement manager>= 14.1.0 and < 14.1.2.7
f5 big-ip policy enforcement manager>= 15.0.0 and < 15.0.1.4
f5 big-ip policy enforcement manager>= 15.1.0 and < 15.1.0.5

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Scoring & Timeline

7.5

HIGH · CVSS v3.1 · f5sirt@f5.com

View on NVD

Attack Vector

Network Adjacent Local Physical

Attack Complexity

Low High

Privileges Required

None Low High

User Interaction

None Required

Scope

Unchanged Changed

Confidentiality

None Low High

Integrity

None Low High

Availability

None Low High

Published to NVD26 Aug 2020 · 04:15 PM

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

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References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

https://support.f5.com/csp/article/K00103216Vendor Advisory

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