CVE-2018-5506

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

In F5 BIG-IP 13.0.0, 12.1.0-12.1.2, 11.6.1, 11.5.1-11.5.5, or 11.2.1 the Apache modules apache_auth_token_mod and mod_auth_f5_auth_token.cpp allow possible unauthenticated bruteforce on the em_server_ip authorization parameter to obtain which SSL client certificates used for mutual authentication between BIG-IQ or Enterprise Manager (EM) and managed BIG-IP devices.

Metrics

CVSS 3.0 9.8/10CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected software

No affected versions have been published.

Timeline

Published: Apr 13, 2018
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2018

CVE-2018-55077.5On F5 BIG-IP versions 13.0.0, 12.1.0-12.1.3.1, 11.6.1-11.6.2, or 11.5.1-11.5.5, vCMP guests running on VIPRION 2100, 4200 and 4300 series bl CVE-2018-55085.9On F5 BIG-IP PEM versions 13.0.0, 12.0.0-12.1.3.1, 11.6.0-11.6.2, 11.5.1-11.5.5, or 11.2.1, under certain conditions, TMM may crash when pro CVE-2018-55097.5On 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, CVE-2018-55107.5On F5 BIG-IP 11.5.4 HF4-11.5.5, the Traffic Management Microkernel (TMM) may restart when processing a specific sequence of packets on IPv6 CVE-2018-55117.2On F5 BIG-IP 13.1.0-13.1.0.3 or 13.0.0, when authenticated administrative users execute commands in the Traffic Management User Interface (T CVE-2018-55127.5On F5 BIG-IP 13.1.0-13.1.0.5, when Large Receive Offload (LRO) and SYN cookies are enabled (default settings), undisclosed traffic patterns CVE-2018-55137.5On F5 BIG-IP 13.1.0-13.1.0.3, 13.0.0, 12.1.0-12.1.3.3, 11.6.1-11.6.3.1, 11.5.1-11.5.5, or 11.2.1, a malformed TLS handshake causes TMM to cr CVE-2018-55147.5On F5 BIG-IP 13.1.0-13.1.0.5, maliciously crafted HTTP/2 request frames can lead to denial of service. There is data plane exposure for virt CVE-2018-55154.4On F5 BIG-IP 13.0.0-13.1.0.5, using RADIUS authentication responses from a RADIUS server with IPv6 addresses may cause TMM to crash, leading CVE-2018-55164.7On F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.2, or 11.2.1-11.6.3.1, Enterprise Manager 3.1.1, BIG-IQ Centralized Management 5.0.0-5.4.0 or 4.6.CVE-2018-55177.5On F5 BIG-IP 13.1.0-13.1.0.5, malformed TCP packets sent to a self IP address or a FastL4 virtual server may cause an interruption of servic CVE-2018-55185.4On F5 BIG-IP 13.0.0-13.1.0.5 or 12.0.0-12.1.3.3, malicious root users with access to a VCMP guest can cause a disruption of service on adjac