SB2021042913 - Denial of service in F5 BIG-IP TMM
Published: April 29, 2021
Security Bulletin ID
SB2021042913
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Resource exhaustion (CVE-ID: CVE-2021-23011)
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 update from vendor's website.