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F5 Networks Update

2232
Classification
These posts contain security alerts, including digital loopholes, electronic attacks, technical updates, and they are classified base on the level of severity.

● Critical

● High

● Medium

● Low

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حملات تصيدية تستهدف مايكروسوفت تيمز (Microsoft Teams)

● High

Warning Date

Severity Level

Warning Number

Target Sector

19 November, 2020

● Medium

2020-2090

All

Description:

F5 Networks has released a security update to address a vulnerability in the following product:

  • BIG-IP (LTM, AAM, Advanced WAF, AFM, Analytics, APM, ASM, DDHD, DNS, FPS, GTM, Link Controller, PEM, SSLO)
    • 16.0.0
    • 15.0.0 - 15.1.1

* Vulnerability in BIG-IP virtual server

Threats:

An attacker could exploit this vulnerability by conducting TCP sequence prediction attack.

Best practice and Recommendations:

The CERT team encourages users to review F5 Networks security advisory and apply the necessary updates:

To mitigate this vulnerability:

  • Set the value for the system database variable "connection.syncookies.algorithm" to "software". This procedure may increase the CPU usage of the BIG-IP system.

Last updated at 19 November, 2020

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