SB2023062652 - Denial of service in BIG-IP and BIG-IQ Centralized Management iControl REST 

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Main Vulnerability Database SB2023062652

SB2023062652 - Denial of service in BIG-IP and BIG-IQ Centralized Management iControl REST

Published: June 26, 2023

Security Bulletin ID SB2023062652
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Race condition (CVE-ID: CVE-2020-27216)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a race condition. On Unix like systems, the system's temporary directory is shared between all users on that system. A collocated user can observe the process of creating a temporary sub directory in the shared temporary directory and race to complete the creation of the temporary subdirectory. If the attacker wins the race then they will have read and write permission to the subdirectory used to unpack web applications, including their WEB-INF/lib jar files and JSP files. If any code is ever executed out of this temporary directory, this can lead to a local privilege escalation vulnerability.


Remediation

Install update from vendor's website.

References