Vulnerability CVE-2021-23009

Vulnerability Name:

CVE-2021-23009 (CCN-200918)

Assigned:

2021-04-28

Published:

2021-04-28

Updated:

2021-05-21

Summary:

On BIG-IP version 16.0.x before 16.0.1.1 and 15.1.x before 15.1.3, malformed HTTP/2 requests may cause an infinite loop which causes a Denial of Service for Data Plane traffic. TMM takes the configured HA action when the TMM process is aborted. There is no control plane exposure, this is a data plane issue only.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVSS v3 Severity:

7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

CVSS v2 Severity:

5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Complete

Vulnerability Type:

CWE-835

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2021-23009

Source: XF
Type: UNKNOWN
f5-cve202123009-dos(200918)

Source: CCN
Type: F5 Security Advisory K90603426
TMM with HTTP/2 vulnerability (CVE-2021-23009)

Source: MISC
Type: Vendor Advisory
https://support.f5.com/csp/article/K90603426

Vulnerable Configuration:

Configuration 1:

cpe:/a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* (Version >= 15.1.0 and < 15.1.3)

OR cpe:/a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* (Version >= 16.0.0 and < 16.0.1.1)

OR cpe:/a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* (Version >= 15.1.0 and < 15.1.3)

OR cpe:/a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* (Version >= 16.0.0 and < 16.0.1.1)

OR cpe:/a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* (Version >= 15.1.0 and < 15.1.3)

OR cpe:/a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* (Version >= 16.0.0 and < 16.0.1.1)

OR cpe:/a:f5:big-ip_analytics:*:*:*:*:*:*:*:* (Version >= 15.1.0 and < 15.1.3)

OR cpe:/a:f5:big-ip_analytics:*:*:*:*:*:*:*:* (Version >= 16.0.0 and < 16.0.1.1)

OR cpe:/a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* (Version >= 15.1.0 and < 15.1.3)

OR cpe:/a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* (Version >= 16.0.0 and < 16.0.1.1)

OR cpe:/a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* (Version >= 15.1.0 and < 15.1.3)

OR cpe:/a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* (Version >= 16.0.0 and < 16.0.1.1)

OR cpe:/a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* (Version >= 15.1.0 and < 15.1.3)

OR cpe:/a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* (Version >= 16.0.0 and < 16.0.1.1)

OR cpe:/a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* (Version >= 15.1.0 and < 15.1.3)

OR cpe:/a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* (Version >= 16.0.0 and < 16.0.1.1)

OR cpe:/a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* (Version >= 15.1.0 and < 15.1.3)

OR cpe:/a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* (Version >= 16.0.0 and < 16.0.1.1)

OR cpe:/a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* (Version >= 15.1.0 and < 15.1.3)

OR cpe:/a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* (Version >= 16.0.0 and < 16.0.1.1)

OR cpe:/a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* (Version >= 15.1.0 and < 15.1.3)

OR cpe:/a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* (Version >= 16.0.0 and < 16.0.1.1)

OR cpe:/a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* (Version >= 15.1.0 and < 15.1.3)

OR cpe:/a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* (Version >= 16.0.0 and < 16.0.1.1)

OR cpe:/a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* (Version >= 15.1.0 and < 15.1.3)

OR cpe:/a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* (Version >= 16.0.0 and < 16.0.1.1)

OR cpe:/a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* (Version >= 15.1.0 and < 15.1.3)

OR cpe:/a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* (Version >= 16.0.0 and < 16.0.1.1)

Configuration CCN 1:

cpe:/o:f5:big-ip:15.1.0:*:*:*:*:*:*:*

Denotes that component is vulnerable

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