CVE & CISA-KEV Catalog

CVE-2020-5921

HIGH
7.5
CVSS v3
NVD

Description

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.

How to fix

Remediation Available
big-ip access policy managerNVD
Affected:>= 15.1.0, < 15.1.0.5Fixed in:15.1.0.5CVE-2020-5921derived from NVD
big-ip advanced firewall managerNVD
Affected:>= 15.1.0, < 15.1.0.5Fixed in:15.1.0.5CVE-2020-5921derived from NVD
big-ip analyticsNVD
Affected:>= 15.1.0, < 15.1.0.5Fixed in:15.1.0.5CVE-2020-5921derived from NVD
big-ip application acceleration managerNVD
Affected:>= 15.1.0, < 15.1.0.5Fixed in:15.1.0.5CVE-2020-5921derived from NVD
big-ip application security managerNVD
Affected:>= 15.1.0, < 15.1.0.5Fixed in:15.1.0.5CVE-2020-5921derived from NVD
big-ip domain name systemNVD
Affected:>= 15.1.0, < 15.1.0.5Fixed in:15.1.0.5CVE-2020-5921derived from NVD
big-ip fraud protection serviceNVD
Affected:>= 15.1.0, < 15.1.0.5Fixed in:15.1.0.5CVE-2020-5921derived from NVD
big-ip global traffic managerNVD
Affected:>= 15.1.0, < 15.1.0.5Fixed in:15.1.0.5CVE-2020-5921derived from NVD
big-ip link controllerNVD
Affected:>= 15.1.0, < 15.1.0.5Fixed in:15.1.0.5CVE-2020-5921derived from NVD
big-ip local traffic managerNVD
Affected:>= 15.1.0, < 15.1.0.5Fixed in:15.1.0.5CVE-2020-5921derived from NVD
big-ip policy enforcement managerNVD
Affected:>= 15.1.0, < 15.1.0.5Fixed in:15.1.0.5CVE-2020-5921derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

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

Exploit Intelligence

1.04%probability of exploitation in 30 days
60thpercentile

Moderate risk: more likely to be exploited than 60% of all known CVEs.

References

Vendor Advisory1
Embed a live status badge for CVE-2020-5921
CVE-2020-5921 severity badge

Markdown

[![CVE-2020-5921](https://tridentstack.com/cve/badge/CVE-2020-5921.svg)](https://tridentstack.com/cve/CVE-2020-5921)

HTML

<a href="https://tridentstack.com/cve/CVE-2020-5921"><img src="https://tridentstack.com/cve/badge/CVE-2020-5921.svg" alt="CVE-2020-5921"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.