SB2020121738 - Denial of service in BIG-IP AVRD

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2020121738

SB2020121738 - Denial of service in BIG-IP AVRD

Published: December 17, 2020

Security Bulletin ID SB2020121738
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Input validation error (CVE-ID: CVE-2020-27728)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. Under certain conditions, Analytics, Visibility, and Reporting daemon (AVRD) may generate a core file and restart on the BIG-IP system when processing requests sent from mobile devices. A remote attacker can initiate a denial-of-service (DoS) attack on the AVRD process on the BIG-IP system from a mobile device.

This vulnerability occurs when all of the following conditions are met:

  • Mobile SDK is licensed and enabled.
  • An app using Mobile SDK on certain mobile devices sends a request to a virtual server with a Bot Defense profile.
  • The AVRD process sends the statistics to a BIG-IQ system or any external log server.

Remediation

Install update from vendor's website.

References