Security restrictions bypass in F5 BIG-IQ Centralized Management (Linux kernel component)

Published: 2022-07-11
Risk Low
Patch available NO
Number of vulnerabilities 1
CVE-ID CVE-2018-18281
Exploitation vector Local
Public exploit N/A
Vulnerable software
BIG-IQ Centralized Management
Server applications / Remote management servers, RDP, SSH

Vendor F5 Networks, Inc.

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper access control

EUVDB-ID: #VU15643

Risk: Low


CVE-ID: CVE-2018-18281

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No


The vulnerability allows a local user to bypass certain security restrictions.

The vulnerability exists due to improper access restrictions to memory when performing TLB flushes after dropping pagetable locks with mremap() syscall, A local user can access a physical page of a stale TLB entry after ftruncate() syscall is called to remove entries from the pagetables of a task that is in the middle of mremap() syscall.

Successful exploitation of the vulnerability may allow an attacker to gain access to sensitive information, stored in process memory.


Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

BIG-IQ Centralized Management: 7.0.0 - 8.2.0

CPE2.3 External links

Q & A

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Is there known malware, which exploits this vulnerability?