Improper input validation in F5 Big-Ip Access Policy Manager
CVE-2018-5509
On F5 BIG-IP versions 13.0.0 or 12.1.0 - 12.1.3.1, when a specifically configured virtual server receives traffic of an undisclosed nature, TMM will crash and take the configured failover action, potentially causing a denial of service. The configuration which exposes this issue is not common and in general does not work when enabled in previous versions of BIG-IP. Starting in 12.1.0, BIG-IP will crash if the configuration which exposes this issue is enabled and the virtual server receives non TCP traffic. With the fix of this issue, additional configuration validation logic has been added to prevent this configuration from being applied to a virtual server. There is only data plane exposure to this issue with a non-standard configuration. There is no control plane exposure.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.029 (85.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- F5 Big-ip_access_policy_manager
- F5 Big-ip_advanced_firewall_manager
- F5 Big-ip_application_acceleration_manager
- F5 Big-ip_application_security_manager
- F5 Big-ip_link_controller
- F5 Big-ip_local_traffic_manager
- F5 Big-ip_policy_enforcement_manager
- F5 Big-ip_websafe — versions 1.0.0
- F5 Networks, Inc. Big-ip (Ltm, Aam, Afm, Apm, Asm, Link Controller, Pem, Websafe) — versions 13.0.0, 12.1.0 - 12.1.3.1
Weakness classification (CWE)
References
- f5sirt@f5.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
- f5sirt@f5.com (x_refsource_CONFIRM, Vendor Advisory)
- f5sirt@f5.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
Frequently asked questions
- What is CVE-2018-5509?
- CVE-2018-5509 is a high-severity vulnerability in F5 Big-Ip Access Policy Manager, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2018-03-22.
- How severe is CVE-2018-5509?
- High severity. CVSS v3 base score is 7.5 out of 10.