cbcvebase.
CVE-2021-23049
published 2021-09-14

CVE-2021-23049: On BIG-IP version 16.0.x before 16.0.1.2 and 15.1.x before 15.1.3, when the iRules RESOLVER::summarize command is used on a virtual server, undisclosed…

PriorityP339high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.96%
57.6th percentile
On BIG-IP version 16.0.x before 16.0.1.2 and 15.1.x before 15.1.3, when the iRules RESOLVER::summarize command is used on a virtual server, undisclosed requests can cause an increase in Traffic Management Microkernel (TMM) memory utilization resulting in an out-of-memory condition and a denial-of-service (DoS). Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected

34 ranges· showing 25
VendorProductVersion rangeFixed in
f5big-ip_aam——
f5big-ip_access_policy_manager——
f5big-ip_access_policy_manager>= 15.1.0 < 15.1.315.1.3
f5big-ip_access_policy_manager>= 16.0.0 < 16.0.1.216.0.1.2
f5big-ip_advanced_firewall_manager>= 15.1.0 < 15.1.315.1.3
f5big-ip_advanced_firewall_manager>= 16.0.0 < 16.0.1.216.0.1.2
f5big-ip_advanced_waf——
f5big-ip_advanced_web_application_firewall>= 15.1.0 < 15.1.315.1.3
f5big-ip_advanced_web_application_firewall>= 16.0.0 < 16.0.1.216.0.1.2
f5big-ip_afm——
f5big-ip_analytics——
f5big-ip_analytics>= 15.1.0 < 15.1.315.1.3
f5big-ip_analytics>= 16.0.0 < 16.0.1.216.0.1.2
f5big-ip_apm——
f5big-ip_application_acceleration_manager>= 15.1.0 < 15.1.315.1.3
f5big-ip_application_acceleration_manager>= 16.0.0 < 16.0.1.216.0.1.2
f5big-ip_application_security_manager>= 15.1.0 < 15.1.315.1.3
f5big-ip_application_security_manager>= 16.0.0 < 16.0.1.216.0.1.2
f5big-ip_asm——
f5big-ip_dns——
f5big-ip_domain_name_system>= 15.1.0 < 15.1.315.1.3
f5big-ip_domain_name_system>= 16.0.0 < 16.0.1.216.0.1.2
f5big-ip_fps——
f5big-ip_fraud_protection_service>= 15.1.0 < 15.1.315.1.3
f5big-ip_fraud_protection_service>= 16.0.0 < 16.0.1.216.0.1.2

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.