How to Configure NetScaler in a HA Setup to Communicate in Two-Arm Config with Different VLAN Tags

This article describes how to configure the appliances in a high availability setup to communicate in a two-arm configuration with different 802.1q VLAN tags on each arm. In some network topologies, administrators enforce a security policy where VLAN traffic through their switching equipment must...

Allen Bradley Micrologix 1100: Input validation vulnerability

The Allen Bradley Micrologix 1100 is a programmable controller for industrial environments from Allen Bradley of the Netherlands. The device supports Ethernet access, online editing for monitoring and programming, an embedded Web server for controlling the device via a Web page, and an embedded L...

CVE-2021-23011

On versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.3, 14.1.x before 14.1.4, 13.1.x before 13.1.4, 12.1.x before 12.1.6, and 11.6.x before 11.6.5.3, when the BIG-IP system is buffering packet fragments for reassembly, the Traffic Management Microkernel TMM may consume an excessive amount of...

CVE-2021-23011

On versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.3, 14.1.x before 14.1.4, 13.1.x before 13.1.4, 12.1.x before 12.1.6, and 11.6.x before 11.6.5.3, when the BIG-IP system is buffering packet fragments for reassembly, the Traffic Management Microkernel TMM may consume an excessive amount of...

Code injection

On versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.3, 14.1.x before 14.1.4, 13.1.x before 13.1.4, 12.1.x before 12.1.6, and 11.6.x before 11.6.5.3, when the BIG-IP system is buffering packet fragments for reassembly, the Traffic Management Microkernel TMM may consume an excessive amount of...

PT-2021-15338

Name of the Vulnerable Software and Affected Versions F5 BIG-IP versions 11.6.x before 11.6.5.3 F5 BIG-IP versions 12.1.x before 12.1.6 F5 BIG-IP versions 13.1.x before 13.1.4 F5 BIG-IP versions 14.1.x before 14.1.4 F5 BIG-IP versions 15.1.x before 15.1.3 F5 BIG-IP versions 16.0.x before 16.0.1.1...

CVE-2021-23011: Uncontrolled Resource Consumption

On versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.3, 14.1.x before 14.1.4, 13.1.x before 13.1.4, 12.1.x before 12.1.6, and 11.6.x before 11.6.5.3, when the BIG-IP system is buffering packet fragments for reassembly, the Traffic Management Microkernel TMM may consume an excessive amount of...

PT-2021-7789

Name of the Vulnerable Software and Affected Versions CODESYS Gateway 3 versions prior to 3.5.17.0 Description The issue is related to a NULL pointer dereference error in the CODESYS Gateway 3 software. This error may result in a denial of service DoS. The vulnerability can be exploited by a remo...

CVE-2021-23005

On all 7.x and 6.x versions fixed in 8.0.0, when using a Quorum device for BIG-IQ high availability HA for automatic failover, BIG-IQ does not make use of Transport Layer Security TLS with the Corosync protocol. Note: Software versions which have reached End of Software Development EoSD are not...

CVE-2021-22996

On all 7.x versions fixed in 8.0.0, when set up for auto failover, a BIG-IQ Data Collection Device DCD cluster member that receives an undisclosed message may cause the corosync process to abort. This behavior may lead to a denial-of-service DoS and impact the stability of a BIG-IQ high...

Code injection

On all 7.x versions fixed in 8.0.0, when set up for auto failover, a BIG-IQ Data Collection Device DCD cluster member that receives an undisclosed message may cause the corosync process to abort. This behavior may lead to a denial-of-service DoS and impact the stability of a BIG-IQ high...

CVE-2021-23005

On all 7.x and 6.x versions fixed in 8.0.0, when using a Quorum device for BIG-IQ high availability HA for automatic failover, BIG-IQ does not make use of Transport Layer Security TLS with the Corosync protocol. Note: Software versions which have reached End of Software Development EoSD are not...

CVE-2021-23005

The CVE-2021-23005 issue affects BIG-IQ high-availability (HA) when using a Quorum device for automatic failover; TLS is not used with the Corosync protocol, exposing in-transit data to potential eavesdropping/modification. Affected BIG-IQ HA versions are 7.x and 6.x; this is fixed in BIG-IQ 8.0....

CVE-2021-22996

On all 7.x versions fixed in 8.0.0, when set up for auto failover, a BIG-IQ Data Collection Device DCD cluster member that receives an undisclosed message may cause the corosync process to abort. This behavior may lead to a denial-of-service DoS and impact the stability of a BIG-IQ high...

CVE-2021-22995

On all 7.x and 6.x versions fixed in 8.0.0, BIG-IQ high availability HA when using a Quorum device for automatic failover does not implement any form of authentication with the Corosync daemon. Note: Software versions which have reached End of Software Development EoSD are not evaluated...

PT-2021-15332

Name of the Vulnerable Software and Affected Versions F5 BIG-IQ versions 6.x through 7.x Description The issue arises when using a Quorum device for BIG-IQ high availability HA with automatic failover, where BIG-IQ fails to utilize Transport Layer Security TLS with the Corosync protocol...

CVE-2021-22995: Missing Authentication for Critical Function

On all 7.x and 6.x versions fixed in 8.0.0, BIG-IQ high availability HA when using a Quorum device for automatic failover does not implement any form of authentication with the Corosync daemon. Note: Software versions which have reached End of Software Development EoSD are not evaluated...

CVE-2021-22996: Undefined Security Weakness

On all 7.x versions fixed in 8.0.0, when set up for auto failover, a BIG-IQ Data Collection Device DCD cluster member that receives an undisclosed message may cause the corosync process to abort. This behavior may lead to a denial-of-service DoS and impact the stability of a BIG-IQ high...

BIG-IQ security vulnerabilities

F5 BIG-IP is an application delivery platform from F5 USA that integrates network traffic management, application security management, and load balancing. A security vulnerability exists in BIG-IQ that stems from the fact that BIG-IQ will not use Transport Layer Security TLS in an HA failover...

Vulnerabilities fixed in F5 BIG-IQ

F5 has fixed vulnerabilities in BIG-IQ. A malicious person at remote can exploit the vulnerabilities to perform a Cross-Site Scripting XSS attack. Such an attack can lead to the execution of arbitrary script code in the browser used to visit the application being visited. In addition, a malicious...