On BIG-IP AFM version 16.x before 16.1.0, 15.1.x before 15.1.5, 14.1.x before 14.1.4.5, and all versions of 13.1.x, when global AFM SYN cookie protection (TCP Half Open flood vector) is activated in the AFM Device Dos or DOS profile, certain types of TCP connections will fail. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Weakness
The product performs a calculation that generates incorrect or unintended results that are later used in security-critical decisions or resource management.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Big-ip_advanced_firewall_manager | F5 | 13.1.0 (including) | 13.1.4 (including) |
| Big-ip_advanced_firewall_manager | F5 | 14.1.0 (including) | 14.1.4 (including) |
| Big-ip_advanced_firewall_manager | F5 | 15.1.0 (including) | 15.1.4 (including) |
Potential Mitigations
- Use languages, libraries, or frameworks that make it easier to handle numbers without unexpected consequences.
- Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++).
- Use languages, libraries, or frameworks that make it easier to handle numbers without unexpected consequences.
- Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++).