Cyber Resilience

CVE-2021-22999

High

Published: 31 March 2021

Published
31 March 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0065 71.2th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-22999 is a high-severity an unspecified weakness vulnerability in F5 Big-Ip Access Policy Manager. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 28.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

On versions 15.0.x before 15.1.0 and 14.1.x before 14.1.4, the BIG-IP system provides an option to connect HTTP/2 clients to HTTP/1.x servers. When a client is slow to accept responses and it closes a connection prematurely, the BIG-IP system may…

more

indefinitely retain some streams unclosed. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

CWE(s)
NVD-CWE-noinfo

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

f5
big-ip access policy manager
14.1.0 — 14.1.4 · 15.0.0 — 15.1.0
f5
big-ip advanced firewall manager
14.1.0 — 14.1.4 · 15.0.0 — 15.1.0
f5
big-ip advanced web application firewall
14.1.0 — 14.1.4 · 15.0.0 — 15.1.0
f5
big-ip analytics
14.1.0 — 14.1.4 · 15.0.0 — 15.1.0
f5
big-ip application acceleration manager
14.1.0 — 14.1.4 · 15.0.0 — 15.1.0
f5
big-ip application security manager
14.1.0 — 14.1.4 · 15.0.0 — 15.1.0
f5
big-ip ddos hybrid defender
14.1.0 — 14.1.4 · 15.0.0 — 15.1.0
f5
big-ip domain name system
14.1.0 — 14.1.4 · 15.0.0 — 15.1.0
f5
big-ip fraud protection service
14.1.0 — 14.1.4 · 15.0.0 — 15.1.0
f5
big-ip global traffic manager
14.1.0 — 14.1.4 · 15.0.0 — 15.1.0
+4 more product configuration(s) — see NVD for full list

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References