Resource exhaustion in BIG-IP - CVE-2021-23011
Published: April 29, 2021
Vulnerability identifier: #VU52745
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-23011
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
BIG-IP
BIG-IP
Software vendor:
F5 Networks
F5 Networks
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources when processing network packets in Traffic Management Microkernel (TMM) module. A remote attacker can send specially crafted traffic to the system, trigger TMM to consume an excessive amount of resources, leading to a restart and failover even.
Remediation
Install updates from vendor's website.