SB2023020309 - Denial of service in BIG-IP AFM FastL4 virtual server with NAT
Published: February 3, 2023
Security Bulletin ID
SB2023020309
CSH 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 vulnerability.
1) Input validation error (CVE-ID: CVE-2023-22281)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input, when a BIG-IP AFM NAT policy with a destination NAT rule is configured on a FastL4 virtual server. A remote attacker can send specially crafted traffic to the system and cause the Traffic Management Microkernel (TMM) to terminate.
Remediation
Install update from vendor's website.